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National Measurement Regulations

SR 1961 No. 142 Regulations as amended, taking into account amendments up to SR 1994 No. 54
Registered 12 Apr 2010
Start Date 11 Mar 1994
End Date 05 Sep 1994
Date of repeal 31 Mar 1999
Repealed by National Measurement Regulations 1999

NATIONAL MEASUREMENT REGULATIONS
- In force under the National Measurement Act 1960
- Updated as at 11 March 1994 (HISTREG CHAP 669 #DATE 11:03:1994)

*1* The National Measurement Regulations (in force under the National Measurement Act 1960) as shown in this reprint comprise Statutory Rules 1961 No. 142 amended as indicated in the Tables below.
Table of Statutory Rules
Year and Date of Date of Application, saving
number notification commencement or transitional
in Gazette provisions
1961 No. 142 27 Nov 1961 27 Nov 1961 (a)
1963 No. 126 12 Dec 1963 12 Dec 1963 -
1964 No. 146 3 Dec 1964 3 Dec 1964 -
1965 No. 13 4 Feb 1965 4 Feb 1965 (b) -
1968 No. 150 5 Dec 1968 5 Dec 1968 -
1970 No. 40 2 Apr 1970 2 Apr 1970 -
1972 No. 62 11 May 1972 11 May 1972 -
133 10 Aug 1972 10 Aug 1972 -
160 5 Oct 1972 5 Oct 1972 -
1973 No. 68 29 Mar 1973 29 Mar 1973 -
253 13 Dec 1973 13 Dec 1973 -
1977 No. 150 8 Sept 1977 8 Sept 1977 -
1979 No. 65 27 Apr 1979 27 Apr 1979 -
1981 No. 195 14 July 1981 14 July 1981 -
1983 No. 64 24 May 1983 24 May 1983 -
1984 No. 195 10 Aug 1984 10 Aug 1984 -
231 12 Sept 1984 12 Sept 1984 -
1985 No. 315 28 Nov 1985 28 Nov 1985 -
1986 No. 172 30 June 1986 1 July 1986 -
399 12 Jan 1987 12 Jan 1987 -
1988 No. 258 31 Oct 1988 1 Nov 1988 -
259 31 Oct 1988 1 Nov 1988 -
1991 No. 146 26 June 1991 26 June 1991 -
1994 No. 54 11 Mar 1994 11 Mar 1994 -
(a) Part II (regulations 4-76) was expressed to take effect on 1
January 1964. That date was progressively extended to 1 January 1965 and
1 January 1966 by Statutory Rules 1963 No. 126 and 1964 No. 146
respectively.
(b) Regulation 1 of Statutory Rules 1965 No.13 provides as follows:
"1. Regulations 4 to 17 (inclusive), and subregulations (1) to (4)
(inclusive) of regulation 23 of, and Parts I to IV (inclusive) of the
Schedule to, these Regulations shall take effect on the date on which
Part II of the Weights and Measures (National Standards) Regulations
takes effect."
See paragraph (a) above.
Table of Amendments
ad=added or inserted am=amended rep=repealed rs=repealed and substituted
Provision affected How affected
R. 1 am. 1984 No. 231
R. 2 am. 1965 No. 13; 1972 No. 62
rep. 1977 No. 150
R. 3 am. 1965 No. 13; 1973 No. 253; 1977 No. 150;
1979 No. 65; 1984 No. 231
Part II (rr. 4-23,
23A-23E, 24-76,
76A-76F) rep. 1979 No. 65
Part II (rr. 4-68) ad. 1979 No. 65
R. 4 rs. 1963 No. 126; 1964 No. 146; 1979 No. 65
am. 1988 No. 258
R. 5 rs. 1979 No. 65; 1984 No. 195
Rr. 6, 7 rs. 1979 No. 65
R. 8 rs. 1979 No. 65
am. 1986 No. 172
Rr. 9, 10 rs. 1979 No. 65
R. 11 am. 1970 No. 40; 1977 No. 150
rs. 1979 No. 65
Rr. 12, 13 am. 1977 No. 150
rs. 1979 No. 65
Rr. 14, 15 rs. 1979 No. 65
R. 16 am. 1965 No. 13
rs. 1979 No. 65
R. 17 rs. 1965 No. 13; 1979 No. 65
am. 1986 No. 172
R. 18 rs. 1965 No. 13; 1979 No. 65
R. 19 rs. 1979 No. 65
R. 20 am. 1965 No. 13
rs. 1979 No. 65
Rr. 21-23 am. 1965 No. 13; 1977 No. 150
rs. 1979 No. 65
Div. 6A of Part II
(rr. 23A-23E) ad. 1972 No. 62
rep. 1979 No. 65
Rr. 23A-23E ad. 1972 No. 62
rep. 1979 No. 65
R. 24 rs. 1979 No. 65
am. 1986 No. 172
R. 25 am. 1968 No. 150
rs. 1979 No. 65
Rr. 26-28 rs. 1979 No. 65
R. 29 am. 1965 No. 13
rs. 1979 No. 65
R. 30 rs. 1979 No. 65
am. 1986 No. 172
R. 31 rs. 1979 No. 65
R. 32 am. 1965 No. 13
rs. 1979 No. 65
am. 1985 No. 315; 1986 No. 172
R. 33 rs. 1979 No. 65
R. 34 rs. 1979 No. 65
am. 1985 No. 315; 1986 No. 172
R. 35 rs. 1979 No. 65
R. 36 am. 1977 No. 150
rs. 1979 No. 65
R. 37 rs. 1979 No. 65
Rr. 38, 39 am. 1977 No. 150
rs. 1979 No. 65
Rr. 40-43 rs. 1979 No. 65
R. 44 rs. 1965 No. 13; 1979 No. 65
R. 45 rs. 1979 No. 65
am. 1988 No. 259
Rr. 46-50 rs. 1979 No. 65
R. 51 rs. 1965 No. 13; 1979 No. 65
R. 52 am. 1965 No. 13
rs. 1979 No. 65
Rr. 53-55 rs. 1979 No. 65
R. 56 rs. 1979 No. 65; 1983 No. 64
R. 57 rs. 1979 No. 65
Rr. 58, 59 rs. 1965 No. 13
am. 1968 No. 150
rs. 1979 No. 65
Rr. 60-63 rs. 1979 No. 65
R. 64 am. 1972 No. 133; 1973 No. 68
rs. 1979 No. 65
R. 65 am. 1968 No. 150; 1970 No. 40
rs. 1979 No. 65
R. 66 rs. 1979 No. 65
R. 67 rs. 1968 No. 150; 1979 No. 65
R. 68 rs. 1979 No. 65
Rr. 69, 70 rep. 1979 No. 65
R. 71 am. 1965 No. 13
rep. 1979 No. 65
Rr. 72-76 rep. 1979 No. 65
Div. 28 of Part II
(rr. 76A, 76B) ad. 1965 No. 13
rs. 1977 No. 150
rep. 1979 No. 65
Rr. 76A, 76B ad. 1965 No. 13
rs. 1977 No. 150
rep. 1979 No. 65
Div. 29 of Part II
(rr. 76C, 76D) ad. 1965 No. 13
rs. 1977 No. 150
rep. 1979 No. 65
Rr. 76C, 76D ad. 1965 No. 13
rs. 1977 No. 150
rep. 1979 No. 65
Div. 30 of Part II
(rr. 76E, 76F) ad. 1977 No. 150
rep. 1979 No. 65
Rr. 76E, 76F ad. 1977 No. 150
rep. 1979 No. 65
Div. 31 of Part II
(rr. 69, 70) ad. 1983 No. 64
R. 69 ad. 1983 No. 64
am. 1984 No. 231
R. 70 ad. 1983 No. 64
Div. 32 of Part II
(rr. 71, 72) ad. 1983 No. 64
R. 71 ad. 1983 No. 64
am. 1984 No. 231
R. 72 ad. 1983 No. 64
Div. 33 of Part II
(rr. 73, 74) ad. 1985 No. 315
Rr. 73, 74 ad. 1985 No. 315
Div. 34 of Part II
(r. 75) ad. 1985 No. 315
R. 75 ad. 1985 No. 315
Div. 35 of Part II
(rr. 76, 76A) ad. 1986 No. 399
Rr. 76, 76A ad. 1986 No. 399
R. 77 am. 1984 No. 231; 1986 No. 399
R. 78 rs. 1965 No. 13
am. 1984 No. 231
R. 78A ad. 1965 No. 13
am. 1968 No. 150; 1984 No. 231; 1988 No. 259
R. 79 rs. 1965 No. 13
am. 1968 No. 150; 1984 No. 231; 1986 No. 399; 1988
No. 259; 1991 No. 146
R. 80 am. 1965 No. 13; 1968 No. 150; 1984 No. 231; 1988
No. 259; 1991 No. 146
R. 80A ad. 1965 No. 13
am. 1968 No. 150
R. 81 am. 1965 No. 13
rs. 1968 No. 150
am. 1984 No. 231; 1988 No. 259; 1991 No. 146
R. 82 ad. 1965 No. 13
rs. 1968 No. 150
am. 1979 No. 65; 1984 No. 231
rs. 1991 No. 146
R. 83 ad. 1968 No. 150
am. 1979 No. 65; 1984 No. 231
rs. 1991 No. 146
rep. 1994 No. 54
Part IV (r. 84) ad. 1981 No. 195
R. 84 ad. 1981 No. 195
am. 1983 No. 64
rs. 1986 No. 172
am. 1988 No. 258
R. 85 ad. 1986 No. 172
rep. 1991 No. 146
First Schedule am. 1965 No. 13
rep. 1979 No. 65
Schedule 1 ad. 1979 No. 65
am. 1988 Nos. 258 and 259
Second Schedule am. 1973 No. 68
rep. 1979 No. 65
Schedule 2 ad. 1979 No. 65
am. 1983 No. 64; 1988 Nos. 258 and 259
Third Schedule rs. 1970 No. 40
am. 1973 Nos. 68 and 253; 1977 No. 150
rep. 1979 No. 65
Schedule 3 ad. 1979 No. 65
am. 1986 No. 172; 1988 No. 259
Fourth Schedule am. 1977 No. 150
rep. 1979 No. 65
Schedule 4 ad. 1979 No. 65
am. 1986 No. 172
rs. 1988 No. 259
Fifth Schedule rs. 1965 No. 13
am. 1972 Nos. 133 and 160; 1977 No. 150
rep. 1979 No. 65
Schedule 5 ad. 1979 No. 65
Sixth Schedule am. 1965 No. 13; 1968 No. 150
rep. 1979 No. 65
Schedule 6 ad. 1979 No. 65
Seventh Schedule am. 1965 No. 13; 1972 Nos. 133 and 160
rs. 1977 No. 150
rep. 1979 No. 65
Schedule 7 ad. 1979 No. 65
am. 1988 No. 259
Eighth Schedule am. 1972 No. 133
rep. 1979 No. 65
Schedule 8 ad. 1979 No. 65
rs. 1983 No. 64
am. 1988 No. 259
Ninth Schedule rep. 1979 No. 65
Schedule 9 ad. 1979 No. 65
am. 1986 No. 172
Tenth Schedule rs. 1965 No. 13
am. 1972 No. 133; 1973 No. 68
rep. 1979 No. 65
Schedule 10 ad. 1979 No. 65
Eleventh Schedule rs. 1965 No. 13
am. 1972 No. 133
rep. 1979 No. 65
Schedule 11 ad. 1979 No. 65
am. 1988 No. 259
Twelfth Schedule am. 1972 No. 133
rep. 1979 No. 65
Schedule 12 ad. 1979 No. 65
am. 1986 No. 172
rs. 1988 No. 259
Thirteenth Schedule am. 1965 No. 13; 1968 No. 150
rs. 1972 No. 133
am. 1973 No. 68
rs. 1977 No. 150
rep. 1979 No. 65
Schedule 13 ad. 1979 No. 65
am. 1983 No. 64; 1986 No. 172; 1988 No. 259
Fourteenth Schedule am. 1972 No. 133
rep. 1979 No. 65
Schedule 14 ad. 1979 No. 65
am. 1983 No. 64; 1986 No. 172; 1988 No. 259
Fifteenth Schedule rs. 1965 No. 13; 1972 No. 62
am. 1972 No. 133; 1973 No. 68; 1977 No. 150
rep. 1979 No. 65
Schedule 15 ad. 1979 No. 65
Sixteenth Schedule am. 1965 No. 13
rs. 1972 No. 133
rep. 1979 No. 65
Schedule 16 ad. 1979 No. 65
rs. 1988 No. 259
Seventeenth Schedule am. 1972 No. 133
rep. 1979 No. 65
Schedule 17 ad. 1979 No. 65
rs. 1988 No. 259
Eighteenth Schedule rep. 1979 No. 65
Schedule 18 ad. 1979 No. 65
am. 1988 No. 259
Nineteenth Schedule am. 1972 No. 133
rep. 1979 No. 65
Schedule 19 ad. 1979 No. 65
rs. 1988 No. 259
Twentieth Schedule am. 1973 No. 68
rep. 1979 No. 65
Schedule 20 ad. 1979 No. 65
am. 1988 No. 259
Twenty-first
- Twenty-third
Schedules rep. 1979 No. 65
Schedules 21-23 ad. 1979 No. 65
am. 1988 No. 259
Twenty-fourth
Schedule am. 1965 No. 13
am. 1968 No. 150; 1977 No. 150
Renumbered
Schedule 31 1979 No. 65
Schedule 24 ad. 1979 No. 65
Twenty-fifth
Schedule ad. 1968 No. 150
am. 1977 No. 150
Renumbered
Schedule 32 1979 No. 65
Schedule 25 ad. 1979 No. 65
Twenty-sixth
Schedule ad. 1970 No. 40
rep. 1979 No. 65
Schedule 26 ad. 1979 No. 65
Twenty-seventh
Schedule ad. 1972 No. 62
rep. 1979 No. 65
Schedule 27 ad. 1979 No. 65
Twenty-eighth
- Thirtieth
Schedules ad. 1977 No. 150
rep. 1979 No. 65
Schedule 28 ad. 1979 No. 65
am. 1988 No. 259
Twenty-ninth
Schedule ad. 1977 No. 150
rep. 1979 No. 65
Thirtieth Schedule ad. 1977 No. 150
rep. 1979 No. 65
Schedule 29 ad. 1979 No. 65
Schedule 30 ad. 1979 No. 65
am. 1988 No. 259
Schedules 30A, 30B ad. 1983 No. 64
Schedule 30C ad. 1985 No. 315
am. 1988 No. 259
Schedule 31
(previously
Twenty-fourth
Schedule) am. 1979 No. 65; 1984 No. 231; 1986 No. 172
rs. 1991 No. 146
Schedules 31A, 31B ad. 1991 No. 146
Schedule 32
(previously
Twenty-fifth
Schedule) am. 1979 No. 65; 1984 No. 231; 1986 No. 172
rs. 1991 No. 146
Schedules 32A-32C ad. 1991 No. 146
Schedule 33 ad. 1986 No. 172
rep. 1988 No. 258
Schedule 34 ad. 1986 No. 172
rs. 1988 No. 258
Schedule 35 ad. 1986 No. 172
rep. 1991 No. 146
Schedule 36 ad. 1986 No. 399

NATIONAL MEASUREMENT REGULATIONS - TABLE OF PROVISIONS

TABLE

TABLE OF PROVISIONS
Regulations
PART I - PRELIMINARY
1. Citation
3. Interpretation
PART II - UNITS OF MEASUREMENT
Division 1 - Length
4. Units of measurement of length
5. The metre
Division 2 - Area
6. Units of measurement of area
7. The square metre
Division 3 - Mass
8. Units of measurement of mass
9. The kilogram
Division 4 - Volume
10. Units of measurement of volume
11. The cubic metre
Division 5 - Density
12. Units of measurement of density
13. The kilogram per cubic metre
Division 6 - Angle
14. Units of measurement of plane angle
15. The radian
16. The degree
17. The degree
18. Unit of measurement of solid angle
19. The steradian
Division 7 - Time interval
20. Units of measurement of time interval
21. The second
Division 8 - Frequency
22. Units of measurement of frequency
23. The hertz
Division 9 - Velocity and speed
24. Units of measurement of velocity and speed
25. The metre per second
Division 10 - Acceleration
26. Units of measurement of acceleration
27. The metre per second squared
Division 11 - Force
28. Units of measurement of force
29. The newton
Division 12 - Work and energy
30. Units of measurement of work and energy
31. The joule
Division 13 - Power
32. Units of measurement of power
33. The watt
Division 14 - Pressure
34. Units of measurement of pressure
35. The pascal
Division 15 - Viscosity and kinematic viscosity
36. Units of measurement of viscosity and kinematic viscosity
37. The pascal second
38. The square metre per second
Division 16 - Electric current
39. Units of measurement of electric current
40. The ampere
Division 17 - Electric charge
41. Units of measurement of electric charge
42. The coulomb
Division 18 - Potential difference and electromotive force
43. Units of measurement of potential difference and
electromotive force
44. The volt
Division 19 - Electrical resistance
45. Units of measurement of electrical resistance
46. The ohm
Division 20 - Electrical conductance
47. Units of measurement of electrical conductance
48. The siemens
Division 21 - Electrical capacitance
49. Units of measurement of electrical capacitance
50. The farad
Division 22 - Electrical inductance
51. Units of measurement of electrical inductance
52. The henry
Division 23 - Temperature
53. Units of measurement of temperature
54. The kelvin and the degree Celsius
Division 24 - Luminous intensity
55. Units of measurement of luminous intensity
56. The candela
Division 25 - Luminous flux
57. Units of measurement of luminous flux
58. The lumen
Division 26 - Illuminance
59. Units of measurement of illuminance
60. The lux
Division 27 - Luminance
61. Units of measurement of luminance
62. The candela per square metre
Division 28 - Activity (radionuclides)
63. Units of measurement of activity
64. The becquerel
Division 29 - Exposure (ionizing radiation)
65. Units of measurement of exposure
66. The coulomb per kilogram
Division 30 - Absorbed dose, absorbed dose index,
kerma and specific energy
67. Units of measurement of absorbed dose, absorbed dose index,
kerma and specific energy imparted
68. The gray
Division 31 - Magnetic flux
69. Units of measurement of magnetic flux
70. The weber
Division 32 - Magnetic flux density
71. Units of measurement of magnetic flux density
72. The tesla
Division 33 - Sound intensity
73. Units of measurement of sound intensity
74. The watt per square metre
Division 34 - Sound power level, sound pressure level,
sound intensity level
75. The decibel
Division 35 - Dose equivalent, dose equivalent index
(ionizing radiation)
76. Units of measurement of dose equivalent and dose equivalent
index
76A. The sievert
PART III - STANDARDS OF MEASUREMENT
77. Verifying authorities
78. Marks to be stamped on or affixed to standards of measurement
78A. Verification etc. of standards of measurement referred to in
section 8 of the Act
79. Verification etc. of State primary standards of measurement
80. Verification of reference standards of measurement
80A. Certificates as evidence
81. Cancelling of certificates
82. Permissible variation in certain reference standards of
measurement
PART IV - MISCELLANEOUS
84. Conversion factors
THE SCHEDULES
SCHEDULE 1 UNITS OF MEASUREMENT OF LENGTH
SCHEDULE 2 UNITS OF MEASUREMENT OF AREA
SCHEDULE 3 UNITS OF MEASUREMENT OF MASS
SCHEDULE 4 UNITS OF MEASUREMENT OF VOLUME
SCHEDULE 5 UNITS OF MEASUREMENT OF DENSITY
SCHEDULE 6 UNITS OF MEASUREMENT OF PLANE ANGLE
SCHEDULE 7 UNITS OF MEASUREMENT OF TIME INTERVAL
SCHEDULE 8 UNITS OF MEASUREMENT OF FREQUENCY
SCHEDULE 9 UNITS OF MEASUREMENT OF VELOCITY AND SPEED
SCHEDULE 10 UNITS OF MEASUREMENT OF ACCELERATION
SCHEDULE 11 UNITS OF MEASUREMENT OF FORCE
SCHEDULE 12 UNITS OF MEASUREMENT OF WORK AND ENERGY
SCHEDULE 13 UNITS OF MEASUREMENT OF POWER
SCHEDULE 14 UNITS OF MEASUREMENT OF PRESSURE
SCHEDULE 15 UNITS OF MEASUREMENT OF VISCOSITY AND
KINEMATIC VISCOSITY
SCHEDULE 16 UNITS OF MEASUREMENT OF ELECTRIC CURRENT
SCHEDULE 17 UNITS OF MEASUREMENT OF ELECTRIC CHARGE
SCHEDULE 18 UNITS OF MEASUREMENT OF POTENTIAL
DIFFERENCE AND ELECTROMOTIVE FORCE
SCHEDULE 19 UNITS OF MEASUREMENT OF ELECTRICAL RESISTANCE
SCHEDULE 20 UNITS OF MEASUREMENT OF ELECTRICAL CONDUCTANCE
SCHEDULE 21 UNITS OF MEASUREMENT OF ELECTRICAL CAPACITANCE
SCHEDULE 22 UNITS OF MEASUREMENT OF ELECTRICAL INDUCTANCE
SCHEDULE 23 UNITS OF MEASUREMENT OF TEMPERATURE
SCHEDULE 24 UNITS OF MEASUREMENT OF LUMINOUS INTENSITY
SCHEDULE 25 UNITS OF MEASUREMENT OF LUMINOUS FLUX
SCHEDULE 26 UNITS OF MEASUREMENT OF ILLUMINANCE
SCHEDULE 27 UNITS OF MEASUREMENT OF LUMINANCE
SCHEDULE 28 UNITS OF MEASUREMENT OF ACTIVITY (RADIONUCLIDES)
SCHEDULE 29 UNITS OF MEASUREMENT OF EXPOSURE IONIZING
RADIATION)
SCHEDULE 30 UNITS OF MEASUREMENT OF ABSORBED DOSE,
ABSORBED DOSE INDEX, KERMA AND SPECIFIC ENERGY IMPARTED
(IONIZING RADIATION)
SCHEDULE 30A UNITS OF MEASUREMENT OF MAGNETIC FLUX
SCHEDULE 30B UNITS OF MEASUREMENT OF MAGNETIC FLUX DENSITY
SCHEDULE 30C UNITS OF MEASUREMENT OF SOUND INTENSITY
SCHEDULE 31 PERMISSIBLE UNCERTAINTY - LENGTH (STATE
PRIMARY STANDARDS AND STATE SECONDARY STANDARDS)
SCHEDULE 31A PERMISSIBLE UNCERTAINTY - MASS (STATE
PRIMARY STANDARDS, STATE SECONDARY STANDARDS AND STATE
TERTIARY STANDARDS)
SCHEDULE 31B PERMISSIBLE UNCERTAINTY - VOLUME (STATE
SECONDARY STANDARDS AND STATE TERTIARY STANDARDS)
SCHEDULE 32 PERMISSIBLE UNCERTAINTY AND PERMISSIBLE
VARIATION - LENGTH (INSPECTORS' CLASS 1 STANDARDS AND
INSPECTORS' CLASS 2 STANDARDS)
SCHEDULE 32A PERMISSIBLE UNCERTAINTY AND PERMISSIBLE
VARIATION - AREA (INSPECTORS' CLASS 1 STANDARDS)
SCHEDULE 32B PERMISSIBLE UNCERTAINTY AND PERMISSIBLE
VARIATION - MASS (INSPECTORS' CLASS 1 STANDARDS, INSPECTORS
CLASS 2 STANDARDS AND INSPECTORS' CLASS 3 STANDARDS)
SCHEDULE 32C PERMISSIBLE UNCERTAINTY AND PERMISSIBLE
VARIATION - VOLUME (INSPECTORS' CLASS 1 STANDARD)
SCHEDULE 34 CONVERSION FACTORS
SCHEDULE 36 UNITS OF MEASUREMENT OF DOSE EQUIVALENT
AND DOSE EQUIVALENT INDEX (IONIZING RADIATION)

NATIONAL MEASUREMENT REGULATIONS - PART I
PART I - PRELIMINARY

NATIONAL MEASUREMENT REGULATIONS - REG 1
Citation

1. These Regulations may be cited as the National Measurement Regulations.*1* SEE NOTES TO FIRST ARTICLE OF THIS CHAPTER .

NATIONAL MEASUREMENT REGULATIONS - REG 3
Interpretation

3. (1) In these Regulations, unless the contrary intention appears:
"the Act" means the National Measurement Act 1960;
"time interval" means time interval not related to the calendar;
"verifying authority", in relation to the verification of a standard of measurement, means a person who is a verifying authority in relation to the verification of such a standard of measurement by virtue of an appointment under regulation 77.


(3) For the purposes of these Regulations, a symbol specified in Column 4 of a Schedule that is formed by the algebraic combination of symbols of other units may also be expressed using appropriate negative exponents.

NATIONAL MEASUREMENT REGULATIONS - PART II
PART II - UNITS OF MEASUREMENT

NATIONAL MEASUREMENT REGULATIONS - DIVISION 1
Division 1 - Length

NATIONAL MEASUREMENT REGULATIONS - REG 4
Units of measurement of length

4. (1) The units of measurement of length are the units specified in Column 2 of Schedule 1.


(2) A unit of measurement specified in an item in Schedule 1 is related to the metre as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 1 may be referred to by the symbol specified in Column 4 of that Schedule in that item.


(4A) The inch, being a unit of measurement equal to (0.914 4) / 36 of a metre, is an additional legal unit of measurement of length for use for the purpose of measurement in relation to:
(a) equipment, being:
(i) automotive tyres or rims;
(ii) equipment used, or intended for use, for the
manufacture or repair of automotive tyres or rims;
(iii) precision pipes, precision tubes, precision
fittings or precision screw threads;
(iv) equipment manufactured for use as spare parts for
equipment constructed using measurements other than metric measurements;
(v) equipment used, or intended for use, in the
manufacture of equipment referred to in subparagraph (iii) or (iv);
(vi) equipment used, or intended for use, by the
Department of Defence;
(vii) equipment used, or intended for use, in aviation;
(viii) equipment used, or intended for use, in the
electronics industry; or
(ix) equipment used, or intended for use, in the computer industry;
(b) components of equipment referred to in paragraph (a); or
(c) contracts, dealings or other transactions in respect of equipment or components of equipment referred to in paragraph (a) or (b).


(5) The foot, being a unit of measurement equal to (0.914 4) / 3 of a metre, is an additional legal unit of measurement of length for use for the purpose of measurement in relation to:
(a) altitude in aviation;
(b) vertical separation in aviation;
(c) submarine depth; or
(d) contracts, dealings or other transactions relating to matters referred to in paragraph (a), (b) or (c).

NATIONAL MEASUREMENT REGULATIONS - REG 5
The metre

5. The metre is the length of the path travelled by light in a vacuum during a time interval of 1 / 299 792 458 of a second.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 2
Division 2 - Area

NATIONAL MEASUREMENT REGULATIONS - REG 6
Units of measurement of area

6. (1) The units of measurement of area are the units specified in Column 2 of Schedule 2.


(2) A unit of measurement specified in an item in Schedule 2 is related to the square metre as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 2 may be referred to by the symbol specified in Column 4 of that Schedule in that item.

NATIONAL MEASUREMENT REGULATIONS - REG 7
The square metre

7. The square metre is the area of a 'square each' side of which is 1 metre in length.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 3
Division 3 - Mass

NATIONAL MEASUREMENT REGULATIONS - REG 8
Units of measurement of mass

8. (1) The units of measurement of mass are the units specified in Column 2 of Schedule 3.


(2) A unit of measurement specified in an item in Schedule 3 is related to the kilogram as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 3 may be referred to by the symbol specified in Column 4 of that Schedule in that item.


(4) The troy ounce, being a unit of measurement equal to 480(0.453 592 37) / 7 000 of a kilogram, is an additional legal unit of measurement of mass for use:
(a) for the purpose of ascertaining the mass of precious metals; or
(b) for the purpose of contracts, dealings or other transactions made or entered into for any work, goods or other thing that is to be done, sold, carried or agreed for by measurement of the mass of precious metals;
and may be referred to by the symbol "oz tr".

NATIONAL MEASUREMENT REGULATIONS - REG 9
The kilogram

9. The kilogram is the mass of the cylinder that:
(a) is deposited in the International Bureau of Weights and Measures; and
(b) was declared by the First General Conference on Weights and Measures held in Paris in the year 1889 to be the International Prototype Kilogram.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 4
Division 4 - Volume

NATIONAL MEASUREMENT REGULATIONS - REG 10
Units of measurement of volume

10. (1) The units of measurement of volume are the units specified in Column 2 of Schedule 4.


(2) A unit of measurement specified in an item in Schedule 4 is related to the cubic metre as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 4 may be referred to by the symbol in Column 4 of that Schedule in that item.

NATIONAL MEASUREMENT REGULATIONS - REG 11
The cubic metre

11. The cubic metre is the volume of a cube each side of which is 1 metre in length.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 5
Division 5 - Density

NATIONAL MEASUREMENT REGULATIONS - REG 12
Units of measurement of density

12. (1) The units of measurement of density are the units specified in Column 2 of Schedule 5.


(2) A unit of measurement specified in an item in Schedule 5 is related to the kilogram per cubic metre as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 5 may be referred to by the symbol specified in Column 4 of that Schedule in that item.

NATIONAL MEASUREMENT REGULATIONS - REG 13
The kilogram per cubic metre

13. The kilogram per cubic metre is the density of a uniform substance a mass of 1 kilogram of which occupies a volume of 1 cubic metre.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 6
Division 6 - Angle

NATIONAL MEASUREMENT REGULATIONS - REG 14
Units of measurement of plane angle

14. (1) The units of measurement of plane angle are the units specified in Column 2 of Schedule 6.


(2) A unit of measurement specified in an item in Schedule 6 is related to the radian as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 6 may be referred to by the symbol specified in Column 4 of that Schedule in that item.

NATIONAL MEASUREMENT REGULATIONS - REG 15
The radian

15. The radian is the plane angle between 2 radii of a circle that cut off on the circumference an arc equal in length to the radius.

NATIONAL MEASUREMENT REGULATIONS - REG 16
The degree

16. The degree is the plane angle between 2 radii of a circle that cut off on the circumference an arc that is 1 / 360 of the circumference.

NATIONAL MEASUREMENT REGULATIONS - REG 17
The degree

17. (1) For all legal purposes 1 degree shall be deemed to be equal to pi radians, where pi is the ratio of the circumference
180
of a circle to the diameter of that circle.


(2) For the purposes of subregulation (1) the ratio of the circumference of a circle to the diameter of that circle shall be deemed to be equal to 3.141 592 654.

NATIONAL MEASUREMENT REGULATIONS - REG 18
Unit of measurement of solid angle

18. (1) The unit of measurement of solid angle is the steradian.


(2) The steradian may be referred to by the symbol "sr".

NATIONAL MEASUREMENT REGULATIONS - REG 19
The steradian

19. The steradian is the solid angle that has its vertex in the centre of a sphere and cuts off an area of the surface of the sphere equal to that of a square with sides of length equal to the radius of the sphere.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 7
Division 7 - Time interval

NATIONAL MEASUREMENT REGULATIONS - REG 20
Units of measurement of time interval

20. (1) The units of measurement of time interval are the units specified in Column 2 of Schedule 7.


(2) A unit of measurement specified in an item in Schedule 7 is related to the second as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 7 may be referred to by the symbol specified in Column 4 of that Schedule in that item.

NATIONAL MEASUREMENT REGULATIONS - REG 21
The second

21. The second is the duration of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium-133 atom.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 8
Division 8 - Frequency

NATIONAL MEASUREMENT REGULATIONS - REG 22
Units of measurement of frequency

22. (1) The units of measurement of frequency are the units specified in Column 2 of Schedule 8.


(2) A unit of measurement specified in an item in Schedule 8 is related to the hertz as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 8 may be referred to by the symbol specified in Column 4 of that Schedule in that item.

NATIONAL MEASUREMENT REGULATIONS - REG 23
The hertz

23. The hertz is the frequency of a regularly recurrent phenomenon that repeats itself once each second.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 9
Division 9 - Velocity and speed

NATIONAL MEASUREMENT REGULATIONS - REG 24
Units of measurement of velocity and speed

24. (1) The units of measurement of velocity and speed are the units specified in Column 2 of Schedule 9.


(2) A unit of measurement specified in an item in Schedule 9 is related to the metre per second as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 9 may be referred to by the symbol specified in Column 4 of that Schedule in that item.


(4) The foot per minute, being a unit of measurement equal to 0.304 8 / 60 of a metre per second, is an additional legal unit of measurement of velocity and speed for use:
(a) for the purpose of measuring vehicular vertical speed; or
(b) for the purpose of contracts, dealings or other transactions made or entered into for any work, goods or other thing that is to be done, sold, carried or agreed for by measurement of vehicular vertical speed;
and may be referred to by the symbol "ft/min".

NATIONAL MEASUREMENT REGULATIONS - REG 25
The metre per second

25. The metre per second is the mean velocity or the mean speed of a point that moves its position rectilinearly a distance of 1 metre in 1 second.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 10
Division 10 - Acceleration

NATIONAL MEASUREMENT REGULATIONS - REG 26
Units of measurement of acceleration

26. (1) The units of measurement of acceleration are the units specified in Column 2 of Schedule 10.


(2) A unit of measurement specified in an item in Schedule 10 is related to the metre per second squared as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 10 may be referred to by the symbol specified in Column 4 of that Schedule in that item.

NATIONAL MEASUREMENT REGULATIONS - REG 27
The metre per second squared

27. The metre per second squared is the mean acceleration of a point that changes its velocity by 1 metre per second in 1 second.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 11
Division 11 - Force

NATIONAL MEASUREMENT REGULATIONS - REG 28
Units of measurement of force

28. (1) The units of measurement of force are the units specified in Column 2 of Schedule 11.


(2) A unit of measurement specified in an item in Schedule 11 is related to the newton as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 11 may be referred to by the symbol specified in Column 4 of that Schedule in that item.

NATIONAL MEASUREMENT REGULATIONS - REG 29
The newton

29. The newton is the force which when applied to a body having a mass of 1 kilogram causes an acceleration of 1 metre per second squared in the direction of application of the force.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 12
Division 12 - Work and energy

NATIONAL MEASUREMENT REGULATIONS - REG 30
Units of measurement of work and energy

30. (1) The units of measurement of work and energy are the units specified in Column 2 of Schedule 12.


(2) A unit of measurement specified in an item in Schedule 12 is related to the joule as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 12 may be referred to by the symbol specified in Column 4 of that Schedule in that item.


(4) The kilocalorie, being a unit of measurement equal to 4.186 8 x 10 3 joules, is an additional legal unit of measurement of work and energy for use:
(a) for the purpose of measuring food energy values; or
(b) for the purpose of contracts, dealings or other transactions made or entered into for any work, goods or other thing that is to be done, sold, carried or agreed for by measurement of food energy values;
and may be referred to by the symbol "kcal".

NATIONAL MEASUREMENT REGULATIONS - REG 31
The joule

31. The joule is the work done or the energy expended when a force of 1 newton moves the point of application a distance of 1 metre in the direction of that force.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 13
Division 13 - Power

NATIONAL MEASUREMENT REGULATIONS - REG 32
Units of measurement of power

32. (1) The units of measurement of power are the units specified in Column 2 of Schedule 13.


(2) A unit of measurement specified in an item in Schedule 13 is related to the watt as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 13 may be referred to by the symbol specified in Column 4 of that Schedule in that item.


(4) In subregulation (1), "power" includes sound power.


(5) Horsepower, being a unit of measurement equal to 745.7 watts, is an additional legal unit of measurement of power for use:
(a) for the purpose of measuring engine ratings in the aviation industry;
(b) for the purpose of contracts, dealings or other transactions made or entered into for any work, goods or other thing that is to be done, sold, carried or agreed for by measurement of engine ratings in the aviation industry;
(c) for the purpose of measuring engine ratings in defence equipment; or
(d) for the purpose of contracts, dealings or other transactions made or entered into for any work, goods or other thing that is to be done, sold, carried or agreed for by measurement of engine ratings in defence equipment;
and may be referred to by the symbol "hp".


(6) In this regulation, "defence equipment" means equipment used, or intended for use, by the Department of Defence.

NATIONAL MEASUREMENT REGULATIONS - REG 33
The watt

33. The watt is the power used when work is done or energy is expended at the rate of 1 joule per second.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 14
Division 14 - Pressure

NATIONAL MEASUREMENT REGULATIONS - REG 34
Units of measurement of pressure

34. (1) The units of measurement of pressure are the units specified in Column 2 of Schedule 14.


(2) A unit of measurement specified in an item in Schedule 14 is related to the pascal as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 14 may be referred to by the symbol specified in Column 4 of that Schedule in that item.


(4) In subregulation (1), "pressure" includes sound pressure.


(5) The millibar, being a unit of measurement equal to 100 pascals, is an additional legal unit of measurement for pressure for use:
(a) for the purpose of measuring air pressure in relation to aviation; or
(b) for the purpose of contracts, dealings or other transactions made or entered into for any work, goods or other thing that is to be done, sold, carried or agreed for by measurement of air pressure;
and may be referred to by the symbols "mb or mbar".


(6) A millimetre of mercury, being a unit of measurement equal to 133.322 19 pascals, is an additional legal unit of measurement of pressure for use:
(a) for the purpose of measuring blood pressure; or
(b) for the purpose of contracts, dealings or other transactions made or entered into for any work, goods or other thing that is to be done, sold, carried or agreed for by measurement of blood pressure;
and may be referred to by the symbol "mmHg".

NATIONAL MEASUREMENT REGULATIONS - REG 35
The pascal

35. The pascal is the pressure resulting from a force of 1 newton applied uniformly over an area of 1 square metre.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 15
Division 15 - Viscosity and kinematic viscosity

NATIONAL MEASUREMENT REGULATIONS - REG 36
Units of measurement of viscosity and kinematic viscosity

36. (1) The units of measurement of viscosity and kinematic viscosity are the units specified in Column 2 of Schedule 15.


(2) A unit of measurement specified in an item in Schedule 15 is related to the pascal second or the square metre per second as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 15 may be referred to by the symbol specified in Column 4 of that Schedule in that item.

NATIONAL MEASUREMENT REGULATIONS - REG 37
The pascal second

37. The pascal second is the viscosity of a fluid for which there is a tangential force of 1 newton on 1 square metre of either of 2 infinite parallel planes 1 metre apart when:
(a) the space between those planes is filled with the fluid;
(b) one of the planes moves with a velocity of 1 metre per second in its own plane relative to the other; and
(c) the movement of the fluid is laminar.

NATIONAL MEASUREMENT REGULATIONS - REG 38
The square metre per second

38. The square metre per second is the kinematic viscosity of a fluid having a viscosity of 1 pascal second and a density of 1 kilogram per cubic metre.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 16
Division 16 - Electric current

NATIONAL MEASUREMENT REGULATIONS - REG 39
Units of measurement of electric current

39. (1) The units of measurement of electric current are the units specified in Column 2 of Schedule 16.


(2) A unit of measurement specified in an item in Schedule 16 is related to the ampere as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 16 may be referred to by the symbol specified in Column 4 of that Schedule in that item.

NATIONAL MEASUREMENT REGULATIONS - REG 40
The ampere

40. The ampere is the unvarying electric current that, when flowing in each of 2 parallel straight conductors of infinite length of negligible cross-section and separated by a distance of 1 metre from each other in free space, produces between those conductors a force equal to 0.2 X 10 -6 newtons per metre length of conductor.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 17
Division 17 - Electric charge

NATIONAL MEASUREMENT REGULATIONS - REG 41
Units of measurement of electric charge

41. (1) The units of measurement of electric charge are the units specified in Column 2 of Schedule 17.


(2) A unit of measurement specified in an item in Schedule 17 is related to the coulomb as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 17 may be referred to by the symbol specified in Column 4 of that Schedule in that item.

NATIONAL MEASUREMENT REGULATIONS - REG 42
The coulomb

42. The coulomb is the quantity of electric charge that is transferred each second by an electric current of 1 ampere.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 18
Division 18 - Potential difference and electromotive force

NATIONAL MEASUREMENT REGULATIONS - REG 43
Units of measurement of potential difference and electromotive force

43. (1) The units of measurement of potential difference and electromotive force are the units specified in Column 2 of Schedule 18.


(2) A unit of measurement specified in an item in Schedule 18 is related to the volt as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 18 may be referred to by the symbol specified in Column 4 of that Schedule in that item.

NATIONAL MEASUREMENT REGULATIONS - REG 44
The volt

44. The volt is the potential difference that exists between 2 points on a conductor carrying an unvarying electric current of 1 ampere when the power dissipated between those points is equal to 1 watt.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 19
Division 19 - Electrical resistance

NATIONAL MEASUREMENT REGULATIONS - REG 45
Units of measurement of electrical resistance

45. (1) The units of measurement of electrical resistance are the units specified in Column 2 of Schedule 19.


(1A) A unit of measurement specified in an item in Schedule 19 may be referred to by the alternative name (if any) specified in Column 3 of that Schedule in that item.


(2) A unit of measurement specified in an item in Schedule 19 is related to the ohm as specified in Column 4 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 19 may be referred to by the symbol specified in Column 5 of that Schedule in that item.

NATIONAL MEASUREMENT REGULATIONS - REG 46
The ohm

46. The ohm is the electrical resistance between 2 points on a conductor that does not contain any source of electromotive force when a constant potential difference of 1 volt maintained between those points results in a current of 1 ampere in the conductor.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 20
Division 20 - Electrical conductance

NATIONAL MEASUREMENT REGULATIONS - REG 47
Units of measurement of electrical conductance

47. (1) The units of measurement of electrical conductance are the units specified in Column 2 of Schedule 20.


(2) A unit of measurement specified in an item in Schedule 20 is related to the siemens as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 20 may be referred to by the symbol specified in Column 4 of that Schedule in that item.

NATIONAL MEASUREMENT REGULATIONS - REG 48
The siemens

48. The siemens is the electrical conductance of a conductor that has an electrical resistance of 1 ohm.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 21
Division 21 - Electrical capacitance

NATIONAL MEASUREMENT REGULATIONS - REG 49
Units of measurement of electrical capacitance

49. (1) The units of measurement of electrical capacitance are the units specified in Column 2 of Schedule 21.


(2) A unit of measurement specified in an item in Schedule 21 is related to the farad as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 21 may be referred to by the symbol specified in Column 4 of that Schedule in that item.

NATIONAL MEASUREMENT REGULATIONS - REG 50
The farad

50. The farad is the electrical capacitance that exists between 2 conductors when the transfer of an electric charge of 1 coulomb from one to the other changes the potential difference between them by 1 volt.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 22
Division 22 - Electrical inductance

NATIONAL MEASUREMENT REGULATIONS - REG 51
Units of measurement of electrical inductance

51. (1) The units of measurement of electrical inductance are the units specified in Column 2 of Schedule 22.


(2) A unit of measurement specified in an item in Schedule 22 is related to the henry as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 22 may be referred to by the symbol specified in Column 4 of that Schedule in that item.

NATIONAL MEASUREMENT REGULATIONS - REG 52
The henry

52. The henry is the electrical inductance of a closed circuit in which an electromotive force of 1 volt is produced when the electric current that traverses the circuit varies uniformly at the rate of 1 ampere per second.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 23
Division 23 - Temperature

NATIONAL MEASUREMENT REGULATIONS - REG 53
Units of measurement of temperature

53. (1) The units of measurement of temperature are the units specified in Column 2 of Schedule 23.


(2) A unit of measurement specified in an item in Schedule 23 is related to the kelvin as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 23 may be referred to by the symbol specified in Column 4 of that Schedule in that item.

NATIONAL MEASUREMENT REGULATIONS - REG 54
The kelvin and the degree Celsius

54. (1) The kelvin is 1 / 273.16 of the thermodynamic temperature of the triple point of water.


(2) The degree Celsius is the unit of measurement of Celsius temperature and is equal in magnitude to the kelvin.


(3) The numerical value in degrees Celsius of a thermodynamic temperature is related to the numerical value of that temperature in kelvins in accordance with the equation t = T - 273.15, where:
t is the numerical value of that temperature in degrees Celsius; and
T is the numerical value of that temperature in kelvins.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 24
Division 24 - Luminous intensity

NATIONAL MEASUREMENT REGULATIONS - REG 55
Units of measurement of luminous intensity

55. (1) The units of measurement of luminous intensity are the units specified in Column 2 of Schedule 24.


(2) A unit of measurement specified in an item in Schedule 24 is related to the candela as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 24 may be referred to by the symbol specified in Column 4 of that Schedule in that item.

NATIONAL MEASUREMENT REGULATIONS - REG 56
The candela

56. The candela is the luminous intensity, in a given direction, of a source that emits monochromatic radiation of the frequency 540 x 10 12 hertz and has a radiant intensity in that direction of 1 watt per steradian.
683

NATIONAL MEASUREMENT REGULATIONS - DIVISION 25
Division 25 - Luminous flux

NATIONAL MEASUREMENT REGULATIONS - REG 57
Units of measurement of luminous flux

57. (1) The units of measurement of luminous flux are the units specified in Column 2 of Schedule 25.


(2) A unit of measurement specified in an item in Schedule 25 is related to the lumen as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 25 may be referred to by the symbol specified in Column 4 of that Schedule in that item.

NATIONAL MEASUREMENT REGULATIONS - REG 58
The lumen

58. The lumen is the luminous flux emitted into a solid angle of 1 steradian by an isotropic point source having a luminous intensity of 1 candela.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 26
Division 26 - Illuminance

NATIONAL MEASUREMENT REGULATIONS - REG 59
Units of measurement of illuminance

59. (1) The units of measurement of illuminance are the units specified in Column 2 of Schedule 26.


(2) A unit of measurement specified in an item in Schedule 26 is related to the lux as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 26 may be referred to by the symbol specified in Column 4 of that Schedule in that item.

NATIONAL MEASUREMENT REGULATIONS - REG 60
The lux

60. The lux is the illuminance produced at the surface of a sphere having a radius of 1 metre by a point source that:
(a) is situated at its centre; and
(b) has a luminous intensity of 1 candela in all directions.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 27
Division 27 - Luminance

NATIONAL MEASUREMENT REGULATIONS - REG 61
Units of measurement of luminance

61. (1) The units of measurement of luminance are the units specified in Column 2 of Schedule 27.


(2) A unit of measurement specified in an item in Schedule 27 is related to the candela per square metre as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 27 may be referred to by the symbol specified in Column 4 of that Schedule in that item.

NATIONAL MEASUREMENT REGULATIONS - REG 62
The candela per square metre

62. The candela per square metre is the luminance of a surface that has a uniform luminous intensity of 1 candela per square metre of projected area.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 28
Division 28 - Activity (radionuclides)

NATIONAL MEASUREMENT REGULATIONS - REG 63
Units of measurement of activity

63. (1) The units of measurement of activity of a radionuclide are the units specified in Column 2 of Schedule 28.


(2) A unit of measurement specified in an item in Schedule 28 is related to the becquerel as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 28 may be referred to by the symbol specified in Column 4 of that Schedule in that item.

NATIONAL MEASUREMENT REGULATIONS - REG 64
The becquerel

64. The becquerel is the activity of a radionuclide that is undergoing 1 transformation per second.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 29
Division 29 - Exposure (ionizing radiation)

NATIONAL MEASUREMENT REGULATIONS - REG 65
Units of measurement of exposure

65. (1) The units of measurement of exposure to ionizing radiation are the units specified in Column 2 of Schedule 29.


(2) A unit of measurement specified in an item in Schedule 29 is related to the coulomb per kilogram as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 29 may be referred to by the symbol specified in Column 4 of that Schedule in that item.

NATIONAL MEASUREMENT REGULATIONS - REG 66
The coulomb per kilogram

66. The coulomb per kilogram is the exposure to ionizing radiation in respect of which the sum of the electric charges of all the ions of the same sign produced in air equals 1 coulomb per kilogram of the mass of a volume of air when all the negatrons and positrons liberated by the radiation in that volume of air are completely stopped in air.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 30
Division 30 - Absorbed dose, absorbed dose index, kerma
and specificenergy imparted (ionizing radiation)

NATIONAL MEASUREMENT REGULATIONS - REG 67
Units of measurement of absorbed dose, absorbed dose index, kerma and
specific energy imparted

67. (1) The units of measurement of absorbed dose, absorbed dose index, kerma and specific energy imparted are the units specified in Column 2 of Schedule 30.


(2) A unit of measurement specified in an item in Schedule 30 is related to the gray as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 30 may be referred to by the symbol specified in Column 4 of that Schedule in that item.

NATIONAL MEASUREMENT REGULATIONS - REG 68
The gray

68. The gray is the absorbed dose, absorbed dose index, kerma or specific energy imparted when 1 joule is imparted to 1 kilogram of irradiated matter.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 31
Division 31 - Magnetic flux

NATIONAL MEASUREMENT REGULATIONS - REG 69
Units of measurement of magnetic flux

69. (1) The units of measurement of magnetic flux are the units specified in Column 2 of Schedule 30A.


(2) A unit of measurement specified in an item in Schedule 30A is related to the weber as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 30A may be referred to by the symbol specified in Column 4 of that Schedule in that item.

NATIONAL MEASUREMENT REGULATIONS - REG 70
The weber

70. The weber is the magnetic flux that, linking a circuit of one turn, produces in that circuit an electromotive force of 1 volt if the magnetic flux is reduced to zero at a uniform rate in 1 second.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 32
Division 32 - Magnetic flux density

NATIONAL MEASUREMENT REGULATIONS - REG 71
Units of measurement of magnetic flux density

71. (1) The unit of measurement of magnetic flux density are the units specified in Column 2 of Schedule 30B.


(2) A unit of measurement specified in an item in Schedule 30B is related to the tesla as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 30B may be referred to by the symbol specified in Column 4 of that Schedule in that item.

NATIONAL MEASUREMENT REGULATIONS - REG 72
The tesla

72. The tesla is the magnetic flux density that results if a magnetic flux of 1 weber is uniformly distributed over a plane 1 square metre in area, the direction of the magnetic flux density being perpendicular to that plane.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 33
Division 33 - Sound intensity

NATIONAL MEASUREMENT REGULATIONS - REG 73
Units of measurement of sound intensity

73. (1) The units of measurement of sound intensity are the units specified in Column 2 of Schedule 30C.


(2) A unit of measurement specified in an item in Schedule 30C is related to the watt per square metre as specified in Column 3 of that Schedule in that item.


(3) A unit of measurement specified in an item in Schedule 30C may be referred to by the symbol specified in Column 4 of that Schedule in that item.

NATIONAL MEASUREMENT REGULATIONS - REG 74
The watt per square metre

74. The watt per square metre is the sound intensity when a sound power of one watt is propagated through an area of one square metre normal to the direction of propagation.

NATIONAL MEASUREMENT REGULATIONS - DIVISION 34
Division 34 - Sound power level, sound pressure level,
sound intensity level

NATIONAL MEASUREMENT REGULATIONS - REG 75
The decibel

75. (1) The decibel is the unit of measurement of:
(a) sound power level;
(b) sound pressure level; and
(c) sound intensity level.


(2) In measuring sound power level in decibels, the number of decibels is the number equal to 10 times the logarithm to the base 10 of the ratio of the sound power in the particular case expressed in watts to a reference sound power of 10 -12 watts.


(3) In measuring sound pressure level in decibels, the number of decibels is the number equal to 20 times the logarithm to the base 10 of the ratio of the root-mean-square sound pressure in the particular case expressed in pascals to a reference sound pressure of 2 x 10 -5 pascals.


(4) In measuring sound intensity level in decibels, the number of decibels is the number equal to 10 times the logarithm to the base 10 of the ratio of the sound intensity in the particular case expressed in watts per square metre to a reference sound intensity of 10 -12 watts per square metre.


(5) The decibel may be referred to by the symbol "dB".

NATIONAL MEASUREMENT REGULATIONS - DIVISION 35
Division 35 - Dose equivalent, dose equivalent index
(ionizing radiation)

NATIONAL MEASUREMENT REGULATIONS - REG 76
Units of measurement of dose equivalent and dose equivalent index

76. (1) The units of measurement of dose equivalent and dose equivalent index are the units specified in Column 2 in Schedule 36.


(2) A unit of measurement specified in an item in Schedule 36 is related to the sievert as specified in Column 3 of that item in that Schedule.


(3) A unit of measurement specified in an item in Schedule 36 may be referred to by the symbol specified in Column 4 of that item in that Schedule.

NATIONAL MEASUREMENT REGULATIONS - REG 76A
The sievert

76A. The sievert is the dose equivalent or dose equivalent index where:
(a) an absorbed dose of ionizing radiation equal to one gray is delivered to a biological material; and
(b) the conditions under which the dose is delivered satisfy the formula:
Q x N = 1
where:
Q is a factor that is the quality factor representing the effect on the detriment of the microscopic distribution of absorbed energy; and N is a factor that is the product of all other modifying factors specified by the International Commission on Radiological Protection as at the commencement of these Regulations;
being in each case a factor having the value specified by that Commission as at the commencement of these Regulations.

NATIONAL MEASUREMENT REGULATIONS - PART III
PART III - STANDARDS OF MEASUREMENT

NATIONAL MEASUREMENT REGULATIONS - REG 77
Verifying authorities

77. (1) The Commission may, by instrument in writing, appoint a person (including a body corporate) to be a verifying authority in relation to the verification of standards of measurement as reference standards of measurement.


(2) An appointment under this regulation may be an appointment of the person for the time being holding, or performing the duties of, a specified office of:
(a) the Commonwealth, a State or a Territory; or
(b) a body corporate.


(3) An appointment under this regulation may be in relation to the verification of standards of measurement generally or the verification of the standards of measurement included in a particular class or particular classes of standards of measurement.

NATIONAL MEASUREMENT REGULATIONS - REG 78
Marks to be stamped on or affixed to standards of measurement

78. (1) Subject to this regulation, a standard of measurement shall not be verified under these Regulations unless:
(a) a distinguishing mark has been stamped or otherwise legibly and permanently affixed on or to it before it is verified; or
(b) there is stamped or otherwise legibly marked on or affixed to it, immediately after it has been verified or reverified, a mark indicating the date on which it was verified and, if such is the case, that it is to be deemed to be of a value equal to its denomination in accordance with regulation 82.


(2) Subregulation (1) does not apply in relation to a standard of measurement if it is impracticable, by reason of its size or nature, so to stamp or affix a mark referred to in paragraph (1) (a) or (b) on or to it.

NATIONAL MEASUREMENT REGULATIONS - REG 78A
Verification etc. of standards of measurement referred to
in section 8 of the Act

78A. (1) Where a standard of measurement referred to in section 8 of the Act is verified:
(a) in the case of a verification carried out by the Organisation - an officer or employee of the Organisation authorized by the Organisation in writing to sign and issue certificates under this regulation; or
(b) in any other case - any person authorized by the Organisation in writing to sign and issue certificates under this regulation;
may sign and issue such a certificate with respect to the verification of the standard of measurement.


(2) There shall be stated in every such certificate:
(a) the date on which the standard of measurement was verified;
(b) the accuracy with which the standard was verified;
(c) a description of the mark (if any) appearing on the standard as referred to in regulation 78;
(d) the value, in terms of an Australian legal unit of measurement or of Australian legal units of measurement, of the standard as ascertained on the date referred to in paragraph (a); and
(e) that the standard is an Australian primary standard of measurement or an Australian secondary standard of measurement, as the case may be.


(3) For the purposes of paragraph (2) (b), the accuracy of the standard of measurement shall be ascertained and expressed in a manner authorized by a determination of the Organisation for the purposes of this regulation or, if more than one manner is authorized in such a determination, in one of the manners so authorized.

NATIONAL MEASUREMENT REGULATIONS - REG 79
Verification etc. of State primary standards of measurement

79. (1) Where a standard of measurement to which section 9 of the Act applies is verified in accordance with that section:
(a) in the case of a verification carried out by the Organisation - an officer or employee of the Organisation authorized by the Organisation in writing to sign and issue certificates under this regulation; or
(b) in any other case - any person authorized by the Organisation in writing to sign and issue certificates under this regulation;
may sign and issue such a certificate with respect to the verification of the standard of measurement.


(2) There shall be stated in every such certificate:
(a) the date on which the standard of measurement was verified;
(b) the accuracy with which the standard was verified;
(c) a description of the mark (if any) appearing on the standard as referred to in regulation 78;
(d) the value, in terms of an Australian legal unit of measurement or of Australian legal units of measurement, of the standard as ascertained on the date referred to in paragraph (a);
(e) the period specified under subsection 9 (3) of the Act as the period within which the standard is to be verified again; and
(f) that the standard was verified in accordance with section 9 of the Act.


(3) For the purposes of paragraph (2) (b), the accuracy of the standard of measurement shall be ascertained in a manner authorised by a determination of the Organisation for the purposes of this regulation or, if more than one manner is authorised in such a determination, in one of the manners so authorised.


(4) For the purposes of paragraph (2) (b), the accuracy of the verification of a State primary standard of measurement must be expressed as an uncertainty that does not exceed:
(a) in the case of a State primary standard for the measurement of length that is of a denomination referred to in Column 1 in Schedule 31 - the amount of permissible uncertainty specified in Column 2 in that Schedule in relation to that denomination; or
(b) in the case of a State primary standard for the measurement of mass that is of a denomination referred to in Column 1 in Schedule 31A - the amount of permissible uncertainty specified in Column 2 in that Schedule in relation to that denomination; or
(c) in the case of a State primary standard for the measurement of mass that is of a denomination not referred to in Column 1 in Schedule 31A - the amount of permissible uncertainty appropriate to that denomination when the mathematical method known as linear interpolation is applied to the amounts of permissible uncertainty specified in Column 2 in that Schedule.


(5) For the purposes of paragraph (2) (d), the value of the standard of measurement is the value ascertained under standard reference conditions of 20 degrees Celsius temperature and 101.325 kilopascals pressure.

NATIONAL MEASUREMENT REGULATIONS - REG 80
Verification of reference standards of measurement

80. (1) The verification of a standard of measurement as a reference standard of measurement for the purposes of the Act shall be carried out:
(a) by the Organisation;
(b) by an appropriate verifying authority being a body corporate; or
(c) by, or under the supervision of, an appropriate verifying authority not being a body corporate;
in accordance with this regulation.


(2) The verification shall be carried out in a manner that, having regard to the nature of the standard to be verified, is appropriate for the purpose.


(3) Where a standard of measurement is verified as a reference standard of measurement by the Organisation, the Organisation or an officer or employee of the Organisation authorized by the Organisation in writing for the purposes of this subregulation shall specify the period within which the standard is to be verified again, and the standard shall be verified again within that period.


(4) Where a standard of measurement is verified as a reference standard of measurement by, or under the supervision of, a verifying authority, the standard shall be verified again within such period as the Commission or a person authorized by the Commission in writing for the purposes of this subregulation directs.


(5) A direction by the Commission or a person authorized by the Commission, under subregulation (4) may relate to a particular standard of measurement or to all the standards of measurement included in a particular class of standards of measurement.


(6) Where a standard of measurement is verified in accordance with this regulation:
(a) if the verification is carried out by the Organisation or a verifying authority being a body corporate - an officer or employee of the Organisation or of the verifying authority authorized in writing by the Organisation or the verifying authority, as the case may be, to sign and issue certificates under this regulation; and
(b) if the verification is carried out by, or under the supervision of, a verifying authority not being a body corporate:
(i) the verifying authority; or
(ii) if the Commission empowers the verifying
authority to authorize in writing a person or persons to sign and issue certificates under this regulation, a person so authorized;
may sign and issue a certificate under this regulation.


(7) There shall be stated in every such certificate:
(a) the date on which the standard of measurement was verified;
(b) the accuracy with which the standard was verified;
(c) a description of the mark (if any) appearing on the standard as referred to in regulation 78;
(d) the value, in terms of an Australian legal unit of measurement or of Australian legal units of measurement, of the standard as ascertained on the date referred to in paragraph (a);
(f) the period within which the standard is to be verified again; and
(g) that the standard was verified as a reference standard of measurement:
(i) by the Organisation; or
(ii) by, or under the supervision of, a specified verifying
authority;
in accordance with these Regulations.


(8) For the purposes of paragraph (7) (b), the accuracy of the standard of measurement shall be ascertained in a manner authorised by a determination of the Commission for the purposes of this regulation or, if more than one manner is authorised in such a determination, in one of the manners so authorised.


(9) For the purposes of subregulation (8), the Commission may, from time to time, determine the manner or manners in which the accuracy of a reference standard of measurement shall be ascertained.


(10) Notice of a determination made under subregulation (8) shall be given, by or on behalf of the Commission, to all verifying authorities that have been appointed verifying authorities in relation to a standard of measurement to which the determination relates.


(11) For the purposes of paragraph (7) (b), the accuracy of the verification of a State secondary standard of measurement must be expressed as an uncertainty that does not exceed:
(a) in the case of a State secondary standard for the measurement of length that is of a denomination referred to in Column 1 in Schedule 31 - the amount of permissible uncertainty specified in Column 3 in that Schedule in relation to that denomination; or
(b) in the case of a State secondary standard for the measurement of mass that is of a denomination referred to in Column 1 in Schedule 31A - the amount of permissible uncertainty specified in Column 3 in that Schedule in relation to that denomination; or
(c) in the case of a State secondary standard for the measurement of volume that is of a denomination referred to in Column 1 in Schedule 31B - the amount of permissible uncertainty specified in Column 2 in that Schedule in relation to that denomination; or
(d) in the case of a State secondary standard for the measurement of mass or volume that is of a denomination not referred to in Column 1 in Schedule 31A or 31B - the amount of permissible uncertainty appropriate to that denomination when the mathematical method known as linear interpolation is applied to the amounts of permissible uncertainty specified:
(i) in the case of a standard for the measurement of
mass - in Column 3 in Schedule 31A; or
(ii) in the case of a standard for the measurement of
volume - in Column 2 in Schedule 31B.


(12) For the purposes of paragraph (7) (b), the accuracy of the verification of a State tertiary standard of measurement must be expressed as an uncertainty that does not exceed:
(a) in the case of a State tertiary standard for the measurement of mass that is of a denomination referred to in Column 1 in Schedule 31A - the amount of permissible uncertainty specified in Column 4 in that Schedule in relation to that denomination; or
(b) in the case of a State tertiary standard for the measurement of volume that is of a denomination referred to in Column 1 in Schedule 31B - the amount of permissible uncertainty specified in Column 3 in that Schedule in relation to that denomination; or
(c) in the case of a State tertiary standard for the measurement of mass or volume that is of a denomination not referred to in Column 1 in Schedule 31A or 31B - the amount of permissible uncertainty appropriate to that denomination when the mathematical method known as linear interpolation is applied to the amounts of permissible uncertainty specified:
(i) in the case of a standard for the measurement of
mass - in Column 4 in Schedule 31A; or
(ii) in the case of a standard for the measurement of
volume - in Column 3 in Schedule 31B.


(13) For the purposes of paragraph (7) (b), the accuracy of the verification of an Inspectors' Class 1 standard of measurement must be expressed as an uncertainty that does not exceed:
(a) in the case of an Inspectors' Class 1 standard for the measurement of length that is of a denomination referred to in Column 1 in Schedule 32 - the amount of permissible uncertainty specified in Column 2 in that Schedule in relation to that denomination; or
(b) in the case of an Inspectors' Class 1 standard for the measurement of area that is of a denomination referred to in Column 1 in Schedule 32A - the amount of permissible uncertainty specified in Column 2 in that Schedule in relation to that denomination; or
(c) in the case of an Inspectors' Class 1 standard for the measurement of mass that is of a denomination referred to in Column 1 in Schedule 32B - the amount of permissible uncertainty specified in Column 2 in that Schedule in relation to that denomination; or
(d) in the case of an Inspectors' Class 1 standard for the measurement of volume that is of a denomination referred to in Column 1 in Schedule 32C - the amount of permissible uncertainty specified in Column 2 in that Schedule in relation to that denomination; or
(e) in the case of an Inspectors' Class 1 standard for the measurement of area, mass or volume that is of a denomination not referred to in Column 1 in Schedule 32A, 32B or
32C - the amount of permissible uncertainty appropriate to that denomination when the mathematical method known as linear interpolation is applied to the amounts of uncertainty specified:
(i) in the case of a standard for the measurement of
area - in Column 2 in Schedule 32A; or
(ii) in the case of a standard for the measurement of
mass - in Column 2 in Schedule 32B; or
(iii) in the case of a standard for the measurement of
volume - in Column 2 in Schedule 32C.


(14) For the purposes of paragraph (7) (b), the accuracy of the verification of an Inspectors' Class 2 standard of measurement must be expressed as an uncertainty that does not exceed:
(a) in the case of an Inspectors' Class 2 standard for the measurement of length that is of a denomination referred to in Column 1 in Schedule 32 - the amount of permissible uncertainty specified in Column 4 in that Schedule in relation to that denomination; or
(b) in the case of an Inspectors' Class 2 standard for the measurement of mass that is of a denomination referred to in Column 1 in Schedule 32B - the amount of permissible uncertainty specified in Column 4 in that Schedule in relation to that denomination; or
(c) in the case of an Inspectors' Class 2 standard for the measurement of mass that is of any other denomination - the amount of permissible uncertainty appropriate to that denomination when the mathematical method known as linear interpolation is applied to the amounts of permissible uncertainty specified in Column 4 in that Schedule.


(15) For the purposes of paragraph (7) (b), the accuracy of the verification of an Inspectors' Class 3 standard of measurement must be expressed as an uncertainty that does not exceed:
(a) in the case of an Inspectors' Class 3 standard for the measurement of mass that is of a denomination referred to in Column 1 in Schedule 32B - the amount of permissible uncertainty specified in Column 6 in that Schedule in relation to that denomination; or
(b) in the case of an Inspectors' Class 3 standard for the measurement of mass that is of any other denomination - the amount of permissible uncertainty appropriate to that denomination when the mathematical method known as linear interpolation is applied to the amounts of permissible uncertainty specified in Column 6 in that Schedule.


(16) For the purposes of paragraph (7) (d), the value of the standard of measurement must be:
(a) the value ascertained under standard reference conditions of 20Celsius temperature and 101.325 kilopascals of pressure; or
(b) in respect of a standard of measurement of a substance or thing in relation to which reference conditions are specified in a determination of the Commission under subregulation (17), the value ascertained under those conditions.


(17) For the purposes of paragraph (16) (b), the Commission may, from time to time, determine the conditions under which the value of a reference standard of measurement for a particular substance or thing shall be ascertained.


(18) Notice of a determination made under subregulation (17) must be given by, or on behalf of, the Commission, to each verifying authority that is a verifying authority in relation to a reference standard of measurement to which the determination relates.


(19) In this regulation:
"verifying authority" includes any person authorised by the Organisation to sign and issue certificates:
(a) under paragraph 78A (1) (b); or
(b) under paragraph 79 (1) (b).

NATIONAL MEASUREMENT REGULATIONS - REG 80A
Certificates as evidence

80A. (1) A certificate issued under this Part is evidence of the matters stated in it.


(2) A document purporting to be such a certificate may be received in evidence in any court (whether exercising federal jurisdiction or not) or in proceedings before a person authorized by a law of a State or Territory of the Commonwealth, or by consent of parties, to hear, receive and examine evidence.


(3) A certificate purporting to be a certificate under this Part or a document purporting to be a document cancelling a certificate under this Part shall, unless the contrary is proved, be deemed to have been signed and issued by the person by whom it purports to have been signed and issued and, unless the contrary is proved, the person by whom it purports to have been signed and issued shall be deemed to be a person authorized by, or in pursuance of, this Part to sign and issue the certificate or document.

NATIONAL MEASUREMENT REGULATIONS - REG 81
Cancelling of certificates

81. (1) A certificate issued under regulation 78A or 79 may be cancelled at any time by the Organisation or by a person authorized in writing to do so by the Organisation.


(2) A certificate issued under regulation 80 may be cancelled at any time:
(a) in the case of a certificate issued by an officer or employee of the Organisation - by the Organisation or by a person authorized in writing to do so by the Organisation; or
(b) in the case of a certificate issued by a verifying authority referred to in regulation 80, an officer or employee of such a verifying authority or a person empowered by such a verifying authority under subparagraph 80 (6) (b) (ii) to sign and issue certificates:
(i) by the Commission; or
(ii) by the verifying authority; or
(iii) by a person authorised in writing by the Commission
to cancel a certificate of that kind.


(3) Where a certificate is cancelled in pursuance of this regulation, the body or person cancelling the certificate shall sign and issue a document stating that the certificate has been cancelled or, if the certificate is in the possession of the body or person, endorse on it the word "Cancelled" and the date of cancellation.

NATIONAL MEASUREMENT REGULATIONS - REG 82
Permissible variation in certain reference standards of
measurement

82. (1) Subject to subregulation (3), a standard for the measurement of length, area, mass or volume, being an Inspectors Class 1 standard of measurement, an Inspectors Class 2 standard of measurement or an Inspectors Class 3 standard of measurement, that, on verification, is found not to be inaccurate by an amount exceeding the relevant permissible variation in relation to its denomination has, for the purposes of the certificate referred to in regulation 80, a value equal to that denomination.


(2) For the purposes of subregulation (1), "relevant permissible variation" means:
(a) in the case of an Inspectors' Class 1 standard for the measurement of length, area, mass or volume that is of a denomination referred to in Schedule 32, 32A, 32B or 32C (as the case requires) - the amount specified in Column 3 in that Schedule in relation to that denomination; or
(b) in the case of an Inspectors' Class 1 standard for the measurement of area, mass or volume that is not of a denomination referred to in Column 1 in Schedule 32A, 32B or 32C - the amount appropriate to that denomination when the mathematical method known as linear interpolation is applied to the amounts of permissible variation specified:
(i) in the case of a denomination of area - in Column 3
in Schedule 32A; or
(ii) in the case of a denomination of mass - in Column 3 in Schedule
32B; or
(iii) in the case of a denomination of volume - in Column 3
in Schedule 32C; or
(c) in the case of an Inspectors Class 2 standard for the measurement of length or mass that is of a denomination referred to in Column 1 of Schedule 32 or 32B (as the case requires) - the amount specified, in relation to that denomination:
(i) in the case of a denomination of length - in Column 5
in Schedule 32; or
(ii) in the case of a denomination of mass - in Column 5 in
Schedule 32B; or
(d) in the case of an Inspectors Class 2 standard for the measurement of mass that is of a denomination not referred to in Column 1 in Schedule 32B - the amount appropriate to that denomination when the mathematical method known as linear interpolation is applied to the amounts of permissible variation specified in Column 5 in that Schedule; or
(e) in the case of an Inspectors Class 3 standard for the measurement of mass that is of a denomination referred to in Column 1 in Schedule 32B - the amount specified in Column 7 in that Schedule in relation to that denomination; or
(f) in the case of an Inspectors Class 3 standard for the measurement of mass that is of a denomination not referred to in Column 1 in Schedule 32B - the amount appropriate to that denomination when the mathematical method known as linear interpolation is applied to the amounts of permissible variation specified in Column 7 in that Schedule.


(3) A standard of measurement referred to in this regulation must not be taken to have a value equal to the value of a particular denomination of length, area, mass or volume, unless the accuracy with which that standard is verified is of an uncertainty that does not exceed the amount of permissible uncertainty referred to in respect of that denomination:
(a) in the case of an Inspectors Class 1 standard of measurement - in subregulation 80 (13); or
(b) in the case of an Inspectors Class 2 standard of measurement - in subregulation 80 (14); or
(c) in the case of an Inspectors Class 3 standard of measurement - in subregulation 80 (15).

NATIONAL MEASUREMENT REGULATIONS - PART IV
PART IV - MISCELLANEOUS

NATIONAL MEASUREMENT REGULATIONS - REG 84
Conversion factors

84.


(2) For the purposes of section 11 of the Act, the conversion factor specified in Column 4 of an item in Schedule 34 is prescribed for the purpose of converting a measurement of a physical quantity expressed in terms of a unit of measurement of that physical quantity specified in Column 2 of that item to a measurement expressed in terms of the Australian legal unit of measurement specified in Column 3 of that item.

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 1

SCH

SCHEDULE 1 Regulation 4
THE SCHEDULES
UNITS OF MEASUREMENT OF LENGTH
Column 1 Column 2 Column 3 Column 4
Length in
Item Name of unit metres Symbol
1 nautical mile 1852 n mile
2 kilometre 10/3 km
3 hectometre 10/2 hm
4 dekametre 10 dam
5 metre 1 m
6 decimetre 10-1 dm
7 centimetre 10-2 cm
8 millimetre 10-3 mm
9 micrometre or micron 10-6 um
10 nanometre 10-9 nm
10A picometre 10-12 pm
10B femtometre 10-15 fm
10C attometre 10-18 am

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 2

SCH

SCHEDULE 2 Regulation 6
UNITS OF MEASUREMENT OF AREA
Column 1 Column 2 Column 3 Column 4
Area in
Item Name of unit square metres Symbol
1 square kilometre 10/6 km2
2 hectare 10/4 ha
3 square metre 1 m2
4 square decimetre 10-2 dm2
5 square centimetre 10-4 cm2
6 square millimetre 10-6 mm2
6A square micrometre 10-12 um2

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 3

SCH

SCHEDULE 3 Regulation 8
UNITS OF MEASUREMENT OF MASS
Column 1 Column 2 Column 3 Column 4
Mass in
Item Name of unit kilograms Symbol
1 megatonne 10/9 Mt
2 kilotonne 10/6 kt
3 tonne 10/3 t
4 megagram 10/3 Mg
5 kilogram 1 kg
6 hectogram 10-1 ..
7 dekagram 10-2 ..
8 gram 10-3 g
9 decigram 10-4 dg
10 centigram 10-5 cg
11 milligram 10-6 mg
12 microgram 10-9 ug
13 nanogram 10-12 ng
14 metric carat 0.2 x 10-3 CM

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 4

SCH

SCHEDULE 4 Regulation 10
UNITS OF MEASUREMENT OF VOLUME
Column 1 Column 2 Column 3 Column 4
Volume in
Item Name of unit cubic metres Symbol
1 teralitre 10/9 TL or Tl
2 gigalitre 10/6 GL or Gl
3 megalitre 10/3 ML or Ml
4 kilolitre 1 kL or kl
5 hectolitre 10-1 hL or hl
6 dekalitre 10-2 daL or dal
7 litre 10-3 L or l
8 decilitre 10-4 dL or dl
9 centilitre 10-5 cL or cl
10 millilitre 10-6 mL or ml
11 microlitre 10-9 uL or ul
12 cubic kilometre 10/9 km3
13 cubic metre 1 m3
14 cubic decimetre 10-3 dm3
15 cubic centimetre 10-6 cm3
16 cubic millimetre 10-9 mm3

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 5

SCH

SCHEDULE 5 Regulation 12
UNITS OF MEASUREMENT OF DENSITY
Column 1 Column 2 Column 3 Column 4
Density in
kilograms per
Item Name of unit cubic metres Symbol
1 gram per cubic centimetre 10/3 g/cm3
2 tonne per cubic metre 10/3 t/m3
3 kilogram per cubic metre 1 kg/m3
4 kilogram per hectolitre 10 kg/hL or kg/hl
5 kilogram per litre 10/3 kg/L or kg/l
6 gram per millilitre 10/3 g/mL or g/ml

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 6

SCH

SCHEDULE 6 Regulation 14
UNITS OF MEASUREMENT OF PLANE ANGLE
Column 1 Column 2 Column 3 Column 4
Angle in
Item Name of unit radians Symbol
1 radian 1 rad
2 milliradian 10-3 mrad
3 microradian 10-6 urad
4 degree n/180 o
5 minute 1/60 x n/180 '
6 second 1/3600 x n/180 "

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 7

SCH

SCHEDULE 7 Regulation 20
UNITS OF MEASUREMENT OF TIME INTERVAL
Column 1 Column 2 Column 3 Column 4
Time interval
Item Name of unit in seconds Symbol
1 day 86 400 d
2 hour 3 600 h
3 minute 60 min
4 second 1 s
5 millisecond 10-3 ms
6 microsecond 10-6 us
7 nanosecond 10-9 ns
8 picosecond 10-12 ps
9 femtosecond 10-15 fs
10 attosecond 10-18 as

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 8

SCH

SCHEDULE 8 Regulation 22
UNITS OF MEASUREMENT OF FREQUENCY
Column 1 Column 2 Column 3 Column 4
Frequency in
Item Name of unit hertz Symbol
1 terahertz 10/12 THz
2 gigahertz 10/9 GHz
3 megahertz 10/6 MHz
4 kilohertz 10/3 kHz
5 hertz 1 Hz
6 millihertz 10-3 mHz
6A microhertz 10-6 uHz
7 revolution per minute 1/60 r/min
8 revolution per second 1 r/s

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 9

SCH

SCHEDULE 9 Regulation 24
UNITS OF MEASUREMENT OF VELOCITY AND SPEED
Column 1 Column 2 Column 3 Column 4
Velocity or
speed in
Item Name of unit metres per Symbol
second
1 metre per second 1 m/s
2 knot 463/900 kn
3 kilometre per hour 5/18 km/h
4 centimetre per second 10-2 cm/s
5 millimetre per second 10-3 mm/s

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 10

SCH

SCHEDULE 10 Regulation 26
UNITS OF MEASUREMENT OF ACCELERATION
Column 1 Column 2 Column 3 Column 4
Acceleration in
metres per
Item Name of unit second squared Symbol
1 metre per second squared 1 m/s2
2 centimetre per second squared 10-2 cm/s2
3 millimetre per second squared 10-3 mm/s2
4 micrometre per second squared 10-6 um/s2

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 11

SCH

SCHEDULE 11 Regulation 28
UNITS OF MEASUREMENT OF FORCE
Column 1 Column 2 Column 3 Column 4
Force in
Item Name of unit newtons Symbol
1A giganewton 10/9 GN
1 meganewton 10/6 MN
2 kilonewton 10/3 kN
3 newton 1 N
4 millinewton 10-3 mN
5 micronewton 10-6 uN

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 12

SCH

SCHEDULE 12 Regulation 30
UNITS OF MEASUREMENT OF WORK AND ENERGY
Column 1 Column 2 Column 3 Column 4
Work or
energy in
Item Name of unit joules Symbol
1 exajoule 10/18 EJ
2 petajoule 10/15 PJ
3 terajoule 10/12 TJ
4 gigajoule 10/9 GJ
5 megajoule 10/6 MJ
6 kilojoule 10/3 kJ
7 joule 1 J
8 millijoule 10-3 mJ
9 microjoule 10-6 uJ
10 nanojoule 10-9 nJ
11 picojoule 10-12 pJ
12 gigawatt hour 3.6 x 10/12 GW.h
13 megawatt hour 3.6 x 10/9 MW.h
14 kilowatt hour 3.6 x 10/6 kW.h
15 watt hour 3 6 x 10/3 W.h
16 teraelectronvolt 1.602 189 2 x 10-7 TeV
17 gigaelectronvolt 1.602 189 2 x 10-10 GeV
18 megaelectronvolt 1.602 189 2 x 10-13 MeV
19 kiloelectronvolt 1.602 189 2 x 10-16 keV
20 electronvolt 1.602 189 2 x 10-19 eV

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 13

SCH

SCHEDULE 13 Regulation 32
UNITS OF MEASUREMENT OF POWER
Column 1 Column 2 Column 3 Column 4
Power in
Item Name of unit watts Symbol
1A petawatt 10/15 PW
1B terawatt 10/12 TW
1 gigawatt 10/9 GW
2 megawatt 10/6 MW
3 kilowatt 10/3 kW
4 watt 1 W
5 milliwatt 10-3 mW
6 microwatt 10-6 uW
7 nanowatt 10-9 nW
8 picowatt 10-12 pW

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 14

SCH

SCHEDULE 14 Regulation 34
UNITS OF MEASUREMENT OF PRESSURE
Column 1 Column 2 Column 3 Column 4
Pressure in
Item Name of unit pascals Symbol
1A terapascal 10/12 TPa
1 gigapascal 10/9 GPa
2 megapascal 10/6 MPa
3 kilopascal 10/3 kPa
3A hectopascal 10/2 hPa
4 pascal 1 Pa
5 millipascal 10-3 mPa
6 micropascal 10-6 uPa
7 nanopascal 10-9 nPa

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 15

SCH

SCHEDULE 15 Regulation 36
UNITS OF MEASUREMENT OF VISCOSITY AND KINEMATIC VISCOSITY
Column 1 Column 2 Column 3 Column 4
Viscosity in
Item Name of unit pascal seconds or
kinematic viscosity in
square metres per
second Symbol
viscosity pascal seconds
1 pascal second 1 Pa.s
2 millipascal second 10-3 mPa.s
3 poise 10-1 P
4 centipoise 10-3 cP
kinematic viscosity square metres per second
5 square metre per second 1 m2/s
6 square millimetre per second 10-6 mm2/s
7 stokes 10-4 St
8 centistokes 10-6 cSt

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 16

SCH

SCHEDULE 16 Regulation 39
UNITS OF MEASUREMENT OF ELECTRIC CURRENT
Column 1 Column 2 Column 3 Column 4
Electric current
Item Name of unit in amperes Symbol
1 gigaampere 10/9 GA
2 megaampere 10/6 MA
3 kiloampere 10/3 kA
4 ampere 1 A
5 milliampere 10-3 mA
6 microampere 10-6 uA
7 nanoampere 10-9 nA
8 picoampere 10-12 pA
9 femtoampere 10-15 fA
10 attoampere 10-18 aA

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 17

SCH

SCHEDULE 17 Regulation 41
UNITS OF MEASUREMENT OF ELECTRIC CHARGE
Column 1 Column 2 Column 3 Column 4
Electric charge
Item Name of unit in coulombs Symbol
1 megacoulomb 10/6 MC
2 kilocoulomb 10/3 kC
3 coulomb 1 C
4 millicoulomb 10-3 mC
5 microcoulomb 10-6 uC
6 nanocoulomb 10-9 nC
7 picocoulomb 10-12 pC
8 ampere hour 3600 A.h

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 18

SCH

SCHEDULE 18 Regulation 43
UNITS OF MEASUREMENT OF POTENTIAL DIFFERENCE AND ELECTROMOTIVE FORCE
Column 1 Column 2 Column 3 Column 4
Potential
difference or
electromotive
Item Name of unit force in volts Symbol
1A teravolt 10/12 TV
1 gigavolt 10/9 GV
2 megavolt 10/6 MV
3 kilovolt 10/3 kV
4 volt 1 V
5 millivolt 10-3 mV
6 microvolt 10-6 uV
7 nanovolt 10-9 nV
8 picovolt 10-12 pV

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 19

SCH

SCHEDULE 19 Regulation 45
UNITS OF MEASUREMENT OF ELECTRICAL RESISTANCE
Column 1 Column 2 Column 3 Column 4 Column 5
Alternative Electrical
name resistance
Item Name of unit in ohms Symbol
1 exaohm 10/18 Eomega 2 petaohm 10/15 Pomega 3 teraohm 10/12 Tomega 4 gigaohm gigohm 10/9 Gomega 5 megaohm megohm 10/6 Momega 6 kiloohm kilohm 10/3 komega 7 ohm 1 omega 8 milliohm 10-3 momega 9 microohm microhm 10-6 uomega 10 nanoohm 10-9 nomega 11 picoohm 10-12 pomega

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 20

SCH

SCHEDULE 20 Regulation 47
UNITS OF MEASUREMENT OF ELECTRICAL CONDUCTANCE
Column 1 Column 2 Column 3 Column 4
Electrical
conductance in
Item Name of unit siemens Symbol
1 siemens 1 S
2 millisiemens 10-3 mS
3 microsiemens 10-6 uS
4 nanosiemens 10-9 nS
5 picosiemens 10-12 pS

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 21

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SCHEDULE 21 Regulation 49
UNITS OF MEASUREMENT OF ELECTRICAL CAPACITANCE
Column 1 Column 2 Column 3 Column 4
Electrical
capacitance in
Item Name of unit farads Symbol
1 farad 1 F
1A millifarad 10-3 mF
2 microfarad 10-6 uF
3 nanofarad 10-9 nF
4 picofarad 10-12 pF
5 femtofarad 10-15 fF

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 22

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SCHEDULE 22 Regulation 51
UNITS OF MEASUREMENT OF ELECTRICAL INDUCTANCE
Column 1 Column 2 Column 3 Column 4
Electrical
inductance in
Item Name of unit henrys Symbol
1A kilohenry 10/3 kH
1 henry 1 H
2 millihenry 10-3 mH
3 microhenry 10-6 uH
4 nanohenry 10-9 nH

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 23

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SCHEDULE 23 Regulation 53
UNITS OF MEASUREMENT OF TEMPERATURE
Column 1 Column 2 Column 3 Column 4
Temperature
interval in
Item Name of unit kelvins Symbol
1 kelvin 1 K
2 millikelvin 0.001 mK
2A microkelvin 10-6 uK
2B nanokelvin 10-9 nK
3 degree Celsius 1 degree C

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 24

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SCHEDULE 24 Regulation 55
UNITS OF MEASUREMENT OF LUMINOUS INTENSITY
Column 1 Column 2 Column 3 Column 4
Luminous
intensity in
Item Name of unit candes Symbol
1 megacandela 10/6 Mcd
2 kilocandela 10/3 kcd
3 candela 1 cd
4 millicandela 10-3 mcd
5 microcandela 10-6 ucd

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 25

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SCHEDULE 25 Regulation 57
UNITS OF MEASUREMENT OF LUMINOUS FLUX
Column 1 Column 2 Column 3 Column 4
Luminous
flux in
Item Name of unit lumens Symbol
1 megalumen 10/6 Mlm
2 kilolumen 10/3 klm
3 lumen 1 lm
4 millilumen 10-3 mlm
5 microlumen 10-6 ulm

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 26

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SCHEDULE 26 Regulation 59
UNITS OF MEASUREMENT OF ILLUMINANCE
Column 1 Column 2 Column 3 Column 4
Illuminance
Item Name of unit in lux Symbol
1 megalux 10/6 Mlx
2 kilolux 10/3 klx
3 lux 1 lx
4 millilux 10-3 mlx
5 microlux 10-6 ulx

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 27

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SCHEDULE 27 Regulation 61
UNITS OF MEASUREMENT OF LUMINANCE
Column 1 Column 2 Column 3 Column 4
Luminance in
candelas per
Item Name of unit square metre Symbol
1 megacandela per square metre 10/6 Mcd/m2
2 kilocandela per square metre 10/3 kcd/m2
3 candela per square metre 1 cd/m2
4 millicandela per square metre 10-3 mcd/m2
5 microcandela per square metre 10-6 ucd/m2

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 28

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SCHEDULE 28 Regulation 63
UNITS OF MEASUREMENT OF ACTIVITY (RADIONUCLIDES)
Column 1 Column 2 Column 3 Column 4
Activity in
Item Name of unit becquerels Symbol
1A exabecquerel 10/18 EBq
1 petabecquerel 10/15 PBq
2 terabecquerel 10/12 TBq
3 gigabecquerel 10/9 GBq
4 megabecquerel 10/6 MBq
5 kilobecquerel 10/3 kBq
6 becquerel 1 Bq
7 millibecquerel 10-3 mBq
8 microbecquerel 10-6 uBq
8A nanobecquerel 10-9 nBq
9 megacurie 3.7 x 10/16 MCi
10 kilocurie 3.7 x 10/13 kCi
11 curie 3.7 x 10/10 uCi
12 millicurie 3.7 x 10/7 mCi
13 microcurie 3.7 x 10/4 Ci
14 nanocurie 3.7 x 10 nCi
15 picocurie 3.7 x 10-2 pCi
16 femtocurie 3.7 x 10-5 fCi

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 29

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SCHEDULE 29 Regulation 65
UNITS OF MEASUREMENT OF EXPOSURE (IONIZING RADIATION)
Column 1 Column 2 Column 3 Column 4
Exposure in
coulombs per
Item Name of unit kilogram Symbol
1 kilocoulomb per kilogram 10/3 kC/kg
2 coulomb per kilogram 1 C/kg
3 millicoulomb per kilogram 10-3 mC/kg
4 microcoulomb per kilogram 10-6 uC/kg
5 nanacoulomb per kilogram 10-9 nC/kg
6 megaroentgen 0.258 x 10/3 MR
7 kiloroentgen 0.258 kR
8 roentgen 0.258 x 10-3 R
9 milliroentgen 0.258 x 10-6 mR
10 microroentgen 0.258 x 10-9 uR

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 30

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SCHEDULE 30 Regulation 67
UNITS OF MEASUREMENT OF ABSORBED DOSE, ABSORBED DOSE INDEX, KERMA AND
SPECIFIC ENERGY IMPARTED (IONIZING RADIATION)
Column 1 Column 2 Column 3 Column 4
Absorbed dose,
absorbed dose index,
kerma or specific
energy imparted in
Item Name of unit grays Symbol
1A gigagray 10/9 GGy
1 megagray 10/6 MGy
2 kilogray 10/3 kGy
3 gray 1 Gy
4 milligray 10-3 mGy
5 microgray 10-6 uGy
6 nanogray 10-9 nGy
7 picogray 10-12 pGy
8 gigarad 10/7 Grad
9 megarad 10/4 Mrad
10 kilorad 10 krad
11 rad 10-2 rad
12 millirad 10-5 mrad

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 30A

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SCHEDULE 30A Regulation 69
UNITS OF MEASUREMENT OF MAGNETIC FLUX
Column 1 Column 2 Column 3 Column 4
Magnetic flux
Item Name of unit in webers Symbol
1 weber 1 Wb
2 milliweber 10-3 mWb
3 microweber 10-6 uWb

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 30B

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SCHEDULE 30B Regulation 71
UNITS OF MEASUREMENT OF MAGNETIC FLUX DENSITY
Column 1 Column 2 Column 3 Column 4
Magnetic flux
density in
Item Name of unit teslas Symbol
1 tesla 1 T
2 millitesla 10-3 mT
3 microtesla 10-6 uT
4 nanotesla 10-9 nT

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 30C

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SCHEDULE 30C Regulation 73
UNITS OF MEASUREMENT OF SOUND INTENSITY
Column 1 Column 2 Column 3 Column 4
Sound intensity
in watts per
Item Name of unit square metre Symbol
1A megawatt per square metre 10/6 MW/m2
1 kilowatt per square metre 10/3 kW/m2
2 watt per square metre 1 W/m2
3 milliwatt per square metre 10-3 mW/m2
4 microwatt per square metre 10-6 uW/m2
5 nanowatt per square metre 10-9 nW/m2
6 picowatt per square metre 10-12 pW/m2

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 31

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SCHEDULE 31 Regulations 79 and 80
PERMISSIBLE UNCERTAINTY-LENGTH (STATE PRIMARY STANDARDS AND
STATE SECONDARY STANDARDS)
PART 1-FLEXIBLE STANDARDS
Column 1 Column 2 Column 3
Permissible uncertainty: Permissible uncertainty:
Denomination State primary standard State secondary standard
Denominations not +- 0.1mm +- 0.2mm
exceeding 10 metres
Denominations exceeding +- 0.001% +- 0.002%
10 metres
PART 2-RIGID STANDARDS
Column 1 Column 2 Column 3
Permissible uncertainty: Permissible uncertainty:
Denomination State primary standard State secondary standard
Denominations not +- 0.01mm +- 0.02mm
exceeding one metre

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 31A

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SCHEDULE 31A Regulations 79 and 80
PERMISSIBLE UNCERTAINTY-MASS (STATE PRIMARY STANDARDS,
STATE SECONDARY STANDARDS AND STATE TERTIARY STANDARDS)
Column 1 Column 2 Column 3 Column 4
Permissible Permissible Permissible
uncertainty: uncertainty: uncertainty:
State primary State secondary State tertiary
standard (in standard (in standard (in
Denomination milligrams) milligrams) milligrams)
50 kilograms 150 200
25 kilograms 75 100
20 kilograms 20 60 80
10 kilograms 10 30 40
5 kilograms 5 15 20
2 kilograms 2 6 13
1 kilogram 1 3 9
500 grams 0.5 1.5 6.5
200 grams 0.2 0.6 4.2
100 grams 0.1 0.3 3.0
50 grams 0.05 0.15 2.1
20 grams 0.02 0.06 1.3
10 grams 0.01 0.03 0.9
5 grams 0.01 0.03 0.65
2 grams 0.01 0.03 0.42
1 gram 0.01 0.03 0.30
500 milligrams 0.005 0.015 0.21
200 milligrams 0.005 0.015 0.13
100 milligrams 0.005 0.015 0.09
50 milligrams 0.002 0.006 0.06
20 milligrams 0.002 0.006 0.04
10 milligrams 0.002 0.006 0.03
5 milligrams 0.002 0.006 0.02
2 milligrams 0.002 0.006 0.01
1 milligram 0.002 0.006 0.01

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 31B

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SCHEDULE 31B Regulation 80
PERMISSIBLE UNCERTAINTY-VOLUME (STATE SECONDARY
STANDARDS AND STATE TERTIARY STANDARDS)
Column 1 Column 2 Column 3
Permissible uncertainty: Permissible uncertainty:
State secondary standard State tertiary standard
Denomination (in millilitres) (in millilitres)
10 000 litres 1 000 2 000
5 000 litres 500 1 000
2 000 litres 200 400
1 000 litres 100 200
500 litres 50 100
200 litres 20 40
100 litres 10 20
50 litres 5 9
20 litres 2 5
15 litres 1.5 4
10 litres 1.0 3
5 litres 0.5 2
2 litres 0.2 1
1 litre 0.1 0.6
500 millilitres 0.05 0.4
250 millilitres 0.02 0.26
200 millilitres 0.02 0.22
100 millilitres 0.01 0.14
50 millilitres 0.005 0.09
25 millilitres 0.005 0.06
20 millilitres 0.005 0.05
10 millilitres 0.005 0.03
5 millilitres 0.005 0.02
2 millilitres 0.005 0.01
1 millilitre 0.002 0.006
0.5 millilitre 0.001 0.003
0.2 millilitre 0.001 0.003
0.1 millilitre 0.001 0.003

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 32

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SCHEDULE 32 Regulation 82
PERMISSIBLE UNCERTAINTY AND PERMISSIBLE VARIATION-LENGTH
(INSPECTORS' CLASS 1 STANDARDS AND INSPECTORS' CLASS 2
STANDARDS)
PART 1-FLEXIBLE STANDARDS
Column 1 Column 2 Column 3 Column 4 Column 5
Permissible Permissible Permissible Permissible
uncertainty: variation: uncertainty: variation:
Inspectors' Inspectors' Inspectors' Inspectors'
Class 1 Class 1 Class 2 Class 2
Denomination standard standard standard standard
Denominations not +- 0.5mm +- 1.5mm +- 1.5mm +- 5.0mm
exceeding 10 metres
Denominations +- 0.005% +- 0.015% +- 0.015% +- 0.05%
exceeding 10 metres
PART 2-RIGID STANDARDS
Column 1 Column 2 Column 3 Column 4 Column 5
Permissible Permissible Permissible Permissible
uncertainty: variation: uncertainty: variation:
Inspectors' Inspectors' Inspectors' Inspectors'
Class 1 Class 1 Class 2 Class 2
Denomination standard standard standard standard
Denominations not +- 0.05mm +- 0.15mm
exceeding 500
millimetres
Denominations +- 0.05mm +- 0.2mm
exceeding 500
millimetres but not
exceeding one metre
Denominations +- 0.07mm +- 0.2mm
exceeding 1 metre but
not exceeding 2 metres

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 32A

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SCHEDULE 32A Regulation 82
PERMISSIBLE UNCERTAINTY AND PERMISSIBLE VARIATION-AREA
(INSPECTORS' CLASS 1 STANDARDS)
Column 1 Column 2 Column 3
Permissible Permissible
Denomination uncertainty variation
(in square (in square (in square
decimetres) decimetres) decimetres)
Denominations not
exceeding 35 0.06 0.18
40 0.07 0.20
50 0.08 0.25
60 0.10 0.30
70 0.12 0.35
80 0.13 0.40
90 0.15 0.45
100 0.17 0.50
150 0.25 0.75

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 32B

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SCHEDULE 32B Regulations 80 and 82
PERMISSIBLE UNCERTAINTY AND PERMISSIBLE VARIATION-MASS
(INSPECTORS' CLASS 1 STANDARDS, INSPECTORS' CLASS 2
STANDARDS AND INSPECTORS' CLASS 3 STANDARDS)
Column 1
Denomination
Column 2 Column 3 Column 4 Column 5 Column 6 Column 7
Permissible Permissible Permissible Permissible Permissible Permissible
uncertainty:variation: uncertainty:variation: uncertainty:variation:
Inspectors' Inspectors' Inspectors' Inspectors' Inspectors' Inspectors'
Class 1 Class 1 Class 2 Class 2 Class 3 Class 3
standard standard standard standard standard standard
(in (in (in (in (in (in
milligrams) milligrams) milligrams) milligrams) milligrams) milligrams)
1 000 kilograms
23 300 70 000
500 kilograms
11 600 35 000
200 kilograms
4 600 14 000
100 kilograms
2 300 7 000
50 kilograms
200 200 200 400 1 150 3 500
25 kilograms
100 100 100 200 580 1 750
20 kilograms
80 80 80 160 500 1 550
10 kilograms
40 40 40 80 360 1 100
5 kilograms
20 28 20 55 260 780
2 kilograms
13 18 13 35 165 500
1 kilogram
9 13 9 25 115 350
500 grams
6.5 9 6.5 18 80 250
200 grams
4.2 6 4.2 11 50 160
100 grams
3.0 4 3.0 8 35 110
50 grams
2.1 3 2.1 5
20 grams
1.3 2 1.3 3.5
10 grams
0.9 1.5 0.9 2.5
5 grams
0.65 1.0 0.65 2.0
2 grams
0.42 0.6 0.42 1.0
1 gram
0.30 0.4 0.30 0.8
500 milligrams
0.21 0.3 0.21 0.6
200 milligrams
0.13 0.2 0.13 0.35
100 milligrams
0.09 0.15 0.09 0.25
50 milligrams
0.06 0.10 0.06 0.20
20 milligrams
0.04 0.06 0.04 0.10
10 milligrams
0.03 0.04 0.03 0.08
5 milligrams
0.02 0.03 0.02 0.06
2 milligrams
0.01 0.02 0.01 0.035
1 milligram
0.01 0.02 0.01 0.025

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 32C

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SCHEDULE 32C Regulation 82
PERMISSIBLE UNCERTAINTY AND PERMISSIBLE VARIATION-VOLUME
(INSPECTORS' CLASS 1 STANDARDS)
Column 1 Column 2 Column 3
Permissible Permissible
uncertainty variation
Denomination (in millilitres) (in millilitres)
10 000 litres 2 000 6 000
5 000 litres 1 000 3 000
2 000 litres 400 1 200
1 000 litres 200 600
500 litres 100 300
200 litres 40 120
100 litres 20 60
50 litres 9 27
20 litres 5 15
15 litres 4 12
10 litres 3 9
5 litres 2 6
2 litres 1 3
1 litre 0.6 2
500 millilitres 0.4 1.2
250 millilitres 0.26 0.8
200 millilitres 0.22 0.7
100 millilitres 0.14 0.4
50 millilitres 0.09 0.27
25 millilitres 0.06 0.17
20 millilitres 0.05 0.15
10 millilitres 0.03 0.09
5 millilitres 0.02 0.06
2 millilitres 0.01 0.03
1 millilitre 0.006 0.02
0.5 millilitre 0.003 0.01
0.2 millilitre 0.003 0.01
0.1 millilitre 0.003 0.01

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 34

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SCHEDULE 34 Regulation 84
CONVERSION FACTORS
Column 1 Column 2 Column 3 Column 4
Item No. Unit of measurement Unit of measurement Conversion Factor
Length
1 mile metre 1 609.344
2 chain metre 22 (0.914 4)
3 yard metre 0.914 4
4 link metre 22 (0.914 4)/100
5 foot metre (0.914 4)/3
6 inch metre (0.914 4)/36
Area
7 square yard square metre (0.914 4)2
8 square foot square metre (0.914 4)2/9
9 square inch square metre (0.914 4)2/1 296
10 acre square metre 4 840 (0.914 4)2
11 rood square metre 1 210 (0.914 4)2
12 perch square metre 30.25 (0.914 4)2
Mass
13 ton kilogram 2 240 (0.453 592 37)
14 short ton (sh tn) kilogram 2 000 (0.453 592 37)
15 hundredweight (cwt) kilogram 112 (0.453 592 37)
16 quarter (qr) kilogram 28 (0.453 592 37)
17 stone kilogram 14 (0.453 592 37)
18 pound (lb) kilogram 0.453 592 37
19 ounce (oz) kilogram (0.453 592 37)/16
20 dram (dr) kilogram (0.453 592 37)/256
21 grain (gr) kilogram (0.453 592 37)/7 000
22 slug kilogram 32.174 (0.453 592 37)
23 troy ounce (oz tr) kilogram 480 (0.453 592 37)/7 000
24 pennyweight (dwt) kilogram 24 (0.453 592 37)/7 000
Volume
25 cubic yard (cu yd
or yd3) cubic metre (0.914 4)3
26 cubic foot (cu ft
or ft3) cubic metre (0.914 4)3/27
27 cubic inch (cu in
or in3) cubic metre (0.914 4)3/466 56
28 gallon (gal) cubic metre 4.546 09 x 10-3
29 quart (qt) cubic metre (4.546 09 x 10-3)/4
30 pint (pt) cubic metre (4.546 09 x 10-3)/8
31 gill cubic metre (4.546 09 x 10-3)/32
32 fluid ounce (fl oz) cubic metre (4.546 09 x 10-3)/160
33 fluid drachm (fl dr) cubic metre (4.546 09 x 10-3)/1 280
34 minim (min) cubic metre (4.546 09 x 10-3)/76 800
Velocity and Speed
35 mile per hour
(mile/h or mph) metre per second 1 609.344/3 600
36 mile per hour kilometre per hour 1.609 344
37 foot per minute
(ft/min) metre per second 0.304 8 /60
Work and Energy
38 kilocalorie (kcal) joule 4.186 8 x 103
39 calorie (cal) joule 4.186 8
40 British thermal unit
(Btu) joule 1 055.056
Power
41 horsepower (hp) watt 745.7
Pressure
42 millimetre of mercury
(mm Hg) pascal 133.322 19
43 millibar (mb or
mbar) pascal 100

NATIONAL MEASUREMENT REGULATIONS - SCHEDULE 36

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SCHEDULE 36 Regulation 76
UNITS OF MEASUREMENT OF DOSE EQUIVALENT AND DOSE EQUIVALENT INDEX
(IONIZING RADIATION)
Column 1 Column 2 Column 3 Column 4
Dose equivalent
or dose
equivalent
Item Name of unit index in sieverts Symbol
1 megasievert 10/6 MSv
2 kilosievert 10/3 kSv
3 sievert 1 Sv
4 millisievert 10-3 mSv
5 microsievert 10-6 uSv
6 nanosievert 10-9 nSv
7 picosievert 10-12 pSv
8 gigarem 10/7 Grem
9 megarem 10/4 Mrem
10 kilorem 10 krem
11 rem 10-2 rem
12 millirem 10-5 mrem