Sections 1(2), 8(1).
SCHEDULE 1U.K. Definitions of Units of Measurement
Part IU.K. Measurement of Length
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)
Metric unitsU.K.
| Kilometre = | 1000 metres. |
| METRE | is the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second. |
| Decimetre = | 1/10 metre. |
| Centimetre = | 1/100 metre. |
| Millimetre = | 1/1000 metre. |
Part IIU.K. Measurement of Area
Imperial unitsU.K.
Textual Amendments
F2Sch. 1 Pts. I, II: entries omitted (1.10.1995) by virtue of S.I. 1994/2867, reg. 6(5)(a)
Metric unitsU.K.
| 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. |
Part IIIU.K. Measurement of Volume
Metric unitsU.K.
| 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. |
Part IVU.K. Measurement of Capacity
[F3Imperial unit]U.K.
Textual Amendments
F3Heading in Sch. 1 Pt. IV substituted (1.1.2000) by S.I. 1994/2867, reg. 7(3)(a)(i)
Textual Amendments
F4Sch. 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)
F5Sch. 1 Pt. IV: definition substituted (1.10.1995) by S.I. 1994/2867, reg. 6(5)(b)(ii)
F6Sch. 1 Pt. IV: definition of “fluid ounce” omitted (1.1.2000) by virtue of S.I. 1994/2867, reg. 7(3)(a)(ii)
Metric unitsU.K.
| Hectolitre = | 100 litres. |
| LITRE = | a cubic decimetre. |
| Decilitre = | 1/10 litre. |
| Centilitre = | 1/100 litre. |
| Millilitre = | 1/1000 litre. |
Part VU.K. Measurement of Mass or Weight
[F7Imperial unit]U.K.
Textual Amendments
F7Heading in Sch. 1 Pt. V substituted (1.1.2000) by S.I. 1994/2867, reg. 7(3)(b)(i)
Textual Amendments
F8Sch. 1 Pt. V: definitions of “pound” and “ounce” omitted (1.1.2000) by virtue of S.I. 1994/2867, reg. 7(3)(b)(ii)
F9Sch. 1 Pt. V: definition of “ounce troy” substituted (1.1.2000) by S.I. 1994/2867, reg. 7(3)(b)(iii)
Metric unitsU.K.
| Tonne, metric tonne = | 1000 kilograms. |
| KILOGRAM= | is the unit of mass; it is equal to the mass of the international prototype of the kilogram. |
| Hectogram = | 1/10 kilogram. |
| Gram = | 1/1000 kilogram. |
| Carat (metric) = | 1/5 gram. |
| Milligram = | 1/1000 gram. |
[F10PART VIU.K.Definitions of certain units which may not be used for trade except as supplementary indications
Textual Amendments
F10Sch. 1 Pt. VI substituted (1.10.1995) by S.I. 1994/2867, reg. 6(5)(c)
| F11Measurement 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. | |
| [F12Fluid ounce] | [F12=] | [F121/20 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. | |
| [F13POUND] | [F13=] | [F13 0.453 592 37 kilogram.] | |
| [F14 Ounce] | [F14=] | [F141/16 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
F11Sch. 1 Pt. VI substituted (1.10.1995) by S.I. 1994/2867, reg. 6(5)(c)
F12Sch. 1 Pt. VI: definition of “fluid ounce” inserted (1.1.2000) by S.I. 1994/2867, reg. 7(3)(c)(i)
F13Sch. 1 Pt. VI: definition of “pound” inserted (1.1.2000) by S.I. 1994/2867, reg. 7(3)(c)(ii)
F14Sch. 1 Pt. VI: definition of “ounce” inserted (1.1.2000) by S.I. 1994/2867, reg. 7(3)(c)(ii)
Part VIIU.K. Measurement of Electricity
| 1. | (a) AMPERE | is that constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section and placed 1 metre apart in vacuum, would produce between these conductors a force equal to 2 x 10–7 newton per metre of length. |
| (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. | |
| 2. | Kilowatt | = 1000 watts. |
| Megawatt | = one million watts. |