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These units were all (except for the cubic units) defined in 1921 relative to the British Imperial gallon, which was defined in the 1824 act. This is equal to 10 pounds of water at a specified temperature and air pressure. This (~ 4.546 090 31 litres) is slightly larger than the modern definition (exactly 4.546 09 litres).
Mass; system unit unit-code symbol or abbrev. notes sample default conversion combinations SI: kilogram: kg kg 1.0 kg (2.2 lb) kg lb. kg lb st; kg st. kg st lb; gram: g g
10 square decus: 1 + 1 ⁄ 9 square inches Foot: 10 square hands: 1 + 1 ⁄ 9 square feet Floor or Square: 10 square pends: 1 + 1 ⁄ 9 square decads Rood: 10 square catens: 1 + 1 ⁄ 9 roods Acre: 10 roods = 1 square muta: 1 + 1 ⁄ 9 double-acre Hide: 10 acres: 1 1 + 1 ⁄ 9 double-acres "Solid Measure" Bimin: 10 cubic mins: 10 ⁄ 27 cubic ...
The weights are in denominations of 7 pounds (corresponding to a unit known as the clip or wool-clip), 14 pounds (stone), 56 pounds (4 stone) and 91 pounds (1 ⁄ 4 sack or woolsack). [ 18 ] [ 19 ] The 91-pound weight is thought to have been commissioned by Edward III in conjunction with the statute of 1350, while the other weights are thought ...
The pound or pound-mass is a unit of mass used in both the British imperial and United States customary systems of measurement.Various definitions have been used; the most common today is the international avoirdupois pound, which is legally defined as exactly 0.453 592 37 kilograms, and which is divided into 16 avoirdupois ounces. [1]
Weight was measured according to "troy measure" and "tron measure" , which were standardised in 1661. In the Troy system these often bore the same name as imperial measures. drop (drap) ounce (unce) pound (pund) stone (stane) Various local measures all existed, often using local weighing stones.
An ounce-force is 1 ⁄ 16 of a pound-force, or about 0.2780139 newtons. It is defined as the force exerted by a mass of one avoirdupois ounce under standard gravity (at the surface of the earth, its weight). The "ounce" in "ounce-force" is equivalent to an avoirdupois ounce; ounce-force is a measurement of force using avoirdupois ounces.
The slug is a derived unit of mass in a weight-based system of measures, most notably within the British Imperial measurement system and the United States customary measures system. Systems of measure either define mass and derive a force unit or define a base force and derive a mass unit [ 1 ] (cf. poundal , a derived unit of force in a mass ...