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 ΔvCs, 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 m2 s-1, where the second is defined by taking the fixed numerical value of the caesium frequency ΔvCs, 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)
| Measurement 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 | = | 8 gallons. | |
| Peck | = | 2 gallons | |
| GALLON | = | 4.54609 cubic decimetres. | |
| Quart | = | ¼ gallon. | |
| Gill | = | ¼ pint. | |
| [F13Fluid ounce] | [F13=] | [F131/20 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. | |
| [F14POUND] | [F14=] | [F140.453 592 37 kilogram.] | |
| [F15 Ounce] | [F15=] | [F151/16 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: definition of “fluid ounce” inserted (1.1.2000) by S.I. 1994/2867, reg. 7(3)(c)(i)
F14Sch. 1 Pt. VI: definition of “pound” inserted (1.1.2000) by S.I. 1994/2867, reg. 7(3)(c)(ii)
F15Sch. 1 Pt. VI: definition of “ounce” inserted (1.1.2000) by S.I. 1994/2867, reg. 7(3)(c)(ii)
| 1. | (a) AMPERE | [F16for 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 ΔvCs, 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 [F17, where the second has the meaning given in the definition of “AMPERE”]. | |
| 2. | Kilowatt | = 1000 watts. |
| Megawatt | = one million watts. |
Textual Amendments
F16Words 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)
F17Words 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)