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- UK Public General Acts
- 1985 c. 72
- SCHEDULE 1

- Latest available (Revised)
- Original (As enacted)

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Weights and Measures Act 1985, SCHEDULE 1 is up to date with all changes known to be in force on or before 28 October 2020. There are changes that may be brought into force at a future date. Changes that have been made appear in the content and are referenced with annotations.

Revised legislation carried on this site may not be fully up to date. Changes and effects are recorded by our editorial team in lists which can be found in the ‘Changes to Legislation’ area. Where those effects have yet to be applied to the text of the legislation by the editorial team they are also listed alongside the legislation in the affected provisions. Use the ‘more’ link to open the changes and effects relevant to the provision you are viewing.

Whole provisions yet to be inserted into this Act (including any effects on those provisions):

- s. 31A(2)(b)(ba) substituted for s. 31A(2)(b) by S.I. 2019/529 reg. 3(2)(a)

Sections 1(2), 8(1).

*Imperial units*

Textual Amendments

F1Sch. 1 Pts. I, II: entries omitted (1.10.1995) by virtue of S.I. 1994/2867, **reg. 6(5)(a)**

Kilometre = | 1000 metres. |

METRE | [F2for which the symbol “m” is used, is the SI unit of length, defined by taking the fixed numerical value of the speed of light in vacuum c to be 299 792 458 when expressed in the unit m/s, where the second is defined by taking the fixed numerical value of the caesium frequency Δv_{Cs}, the unperturbed ground-state hyperfine transition frequency of the caesium 133 atom, to be 9 192 631 770 when expressed in the unit Hz, which is equal to s^{-1}.] |

Decimetre = | 1/10 metre. |

Centimetre = | 1/100 metre. |

Millimetre = | 1/1000 metre. |

Textual Amendments

F2Words in Sch. 1 Pt. 1 substituted (13.6.2020) by The Weights and Measures Act 1985 (Definitions of Metre and Kilogram) (Amendment) Order 2020 (S.I. 2020/586), arts. 1(b), **2(2)**

Textual Amendments

F3Sch. 1 Pts. I, II: entries omitted (1.10.1995) by virtue of S.I. 1994/2867, **reg. 6(5)(a)**

Hectare = | 100 ares. |

Decare = | 10 ares. |

Are = | 100 square metres. |

SQUARE METRE= | a superficial area equal to that of a square each side of which measures one metre. |

Square decimetre = | 1/100 square metre. |

Square centimetre = | 1/100 square decimetre. |

Square millimetre = | 1/100 square centimetre. |

CUBIC METRE = | a volume equal to that of a cube each edge of which measures one metre. |

Cubic decimetre = | 1/1000 cubic metre. |

Cubic centimetre = | 1/1000 cubic decimetre. |

Hectolitre = | 100 litres. |

LITRE = | a cubic decimetre. |

Decilitre = | 1/10 litre. |

Centilitre = | 1/100 litre. |

Millilitre = | 1/1000 litre. |

Textual Amendments

F4Heading in Sch. 1 Pt. IV substituted (1.1.2000) by S.I. 1994/2867, **reg. 7(3)(a)(i)**

Textual Amendments

F5Sch. 1 Pt. IV: definitions of

“gallon”

,

“quart”

and

“gill”

omitted (1.10.1995) by virtue of S.I. 1994/2867, **reg. 6(5)(b)(i)**

F6Sch. 1 Pt. IV: definition substituted (1.10.1995) by S.I. 1994/2867, **reg. 6(5)(b)(ii)**

F7Sch. 1 Pt. IV: definition of

“fluid ounce”

omitted (1.1.2000) by virtue of S.I. 1994/2867, **reg. 7(3)(a)(ii)**

Hectolitre = | 100 litres. |

LITRE = | a cubic decimetre. |

Decilitre = | 1/10 litre. |

Centilitre = | 1/100 litre. |

Millilitre = | 1/1000 litre. |

Textual Amendments

F8Heading in Sch. 1 Pt. V substituted (1.1.2000) by S.I. 1994/2867, **reg. 7(3)(b)(i)**

Textual Amendments

F9Sch. 1 Pt. V: definitions of

“pound”

and

“ounce”

omitted (1.1.2000) by virtue of S.I. 1994/2867, **reg. 7(3)(b)(ii)**

F10Sch. 1 Pt. V: definition of

“ounce troy”

substituted (1.1.2000) by S.I. 1994/2867, **reg. 7(3)(b)(iii)**

Tonne, metric tonne = | 1000 kilograms. |

KILOGRAM | [F11for which the symbol “kg” is used, is the SI unit of mass, defined by taking the fixed numerical value of the Planck constant h to be 6.626 070 15 x 10^{-34} when expressed in the unit J s, which is equal to kg m^{2} s^{-1}, where the second is defined by taking the fixed numerical value of the caesium frequency Δv_{Cs}, the unperturbed ground-state hyperfine transition frequency of the caesium 133 atom, to be 9 192 631 770 when expressed in the unit Hz, which is equal to s^{-1}.] |

Hectogram = | 1/10 kilogram. |

Gram = | 1/1000 kilogram. |

Carat (metric) = | 1/5 gram. |

Milligram = | 1/1000 gram. |

Textual Amendments

F11Words in Sch. 1 Pt. 5 substituted (13.6.2020) by The Weights and Measures Act 1985 (Definitions of Metre and Kilogram) (Amendment) Order 2020 (S.I. 2020/586), arts. 1(b), **2(3)**

Textual Amendments

F12Sch. 1 Pt. VI substituted (1.10.1995) by S.I. 1994/2867, **reg. 6(5)(c)**

F13Measurement of length | |||
---|---|---|---|

Mile | = | 1760 yards. | |

Furlong | = | 220 yards. | |

Chain | = | 22 yards. | |

YARD | = | 0.9144 metre. | |

Foot | = | 1/3 yard. | |

Inch | = | 1/36 yard. | |

Measurement of area | |||

Square mile | = | 640 acres. | |

Acre | = | 4840 square yards. | |

Rood | = | 1210 square yards. | |

Square yard | = | a superficial area equal to that of a square each side of which measures one yard. | |

Square foot | = | 1/9 square yard. | |

Square inch | = | 1/144 square foot. | |

Measurement of volume | |||

Cubic yard | = | a volume equal to that of a cube each edge of which measures one yard. | |

Cubic foot | = | 1/27 cubic yard. | |

Cubic inch | = | 1/1728 cubic foot. | |

Measurement of capacity | |||

Bushel | = | 87 gallons. | |

Peck | = | 2 gallons | |

GALLON | = | 4.54609 cubic decimetres. | |

Quart | = | ¼ gallon. | |

Gill | = | ¼ pint. | |

[F14Fluid ounce] | [F14=] | [F141/20 pint.] | |

Fluid drachm | = | 1/8 fluid ounce. | |

Minim | = | 1/60 fluid drachm. | |

Measurement of mass or weight | |||

Ton | = | 2240 pounds. | |

Hundredweight | = | 112 pounds. | |

Cental | = | 100 pounds. | |

Quarter | = | 28 pounds. | |

Stone | = | 14 pounds. | |

[F15POUND] | [F15=] | [F15 0.453 592 37 kilogram.] | |

[F16 Ounce] | [F16=] | [F161/16 pound] | |

Dram | = | 1/16 ounce. | |

Grain | = | 1/7000 pound. | |

Pennyweight | = | 24 grains. | |

Ounce apothecaries | = | 480 grains. | |

Drachm | = | 1/8 ounce apothecaries. | |

Scruple | = | 1/3 drachm. | |

Metric ton | = | 1000 kilograms. | |

Quintal | = | 100 kilograms.] |

Textual Amendments

F13Sch. 1 Pt. VI substituted (1.10.1995) by S.I. 1994/2867, **reg. 6(5)(c)**

F14Sch. 1 Pt. VI: definition of

“Fluid ounce”

inserted (1.1.2000) by S.I. 1994/2867, **reg. 7(3)(c)(i)**

1. | (a) AMPERE | [F17for which the symbol “A” is used, is the SI unit of electric current, defined by taking the fixed numerical value of the elementary charge e to be 1.602 176 634 × 10^{-19} when expressed in the unit C, which is equal to A s, where the second is defined by taking the fixed numerical value of the caesium frequency Δv_{Cs}, the unperturbed ground-state hyperfine transition frequency of the caesium 133 atom, to be 9 192 631 770 when expressed in the unit Hz, which is equal to s^{-1}.] |

(b) OHM | is the electric resistance between two points of a conductor when a constant potential difference of 1 volt, applied between the two points, produces in the conductor a current of 1 ampere, the conductor not being the seat of any electromotive force. | |

(c) VOLT | is the difference of electric potential between two points of a conducting wire carrying a constant current of 1 ampere when the power dissipated between these points is equal to 1 watt. | |

(d) WATT | is the power which in one second gives rise to energy of 1 joule [F18, where the second has the meaning given in the definition of “AMPERE”]. | |

2. | Kilowatt | = 1000 watts. |

Megawatt | = one million watts. |

Textual Amendments

F17Words in Sch. 1 Pt. 7 substituted (13.6.2020) by The Weights and Measures Act 1985 (Amendment) and Units of Measurement Regulations 1986 (Amendment) Regulations 2019 (S.I. 2019/1211), regs. 1(b), **2(a)**

F18Words in Sch. 1 Pt. 7 inserted (13.6.2020) by The Weights and Measures Act 1985 (Amendment) and Units of Measurement Regulations 1986 (Amendment) Regulations 2019 (S.I. 2019/1211), regs. 1(b), **2(b)**

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