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The standard British troy pound manufactured in 1758; it bears the abbreviation ℔ ("pound") and the letter "T" for troy. The troy pound (lb t) consists of twelve troy ounces [15] and thus is 5 760 grains (373.241 72 grams). (An avoirdupois pound is approximately 21.53% heavier at 7 000 grains (453.592 37 grams), and consists of sixteen ...
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]
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 ...
Weight is measured in ounces and pounds (avoirdupois) as in the U.S. Volume is measured in imperial gallons, quarts, pints, fluid ounces, and fluid drachms. The imperial gallon was originally defined as 10 pounds (4.5359 kg) of water in 1824, and refined as exactly 4.54609 litres in 1985.
Chart showing the relationships of weight measures. ... 1 lb = 16 oz = 7000 grains ('lb' is an abbreviation for the Ancient Roman unit libra) Stone (st) 6.35 kg:
A dram is 1 ⁄ 16 of an ounce ounce (oz) 1 ⁄ 16: 28.349 523 125 g: An ounce is 1 ⁄ 16 of a pound pound (lb) 1 0.453 592 37 kg: Defined by the Units of Measurement Regulations 1994 (SI 1994/2867) [33] stone (st) 14 6.350 293 18 kg: The plural stone is often used when providing a weight (e.g. "this sack weighs 8 stone"). [34]
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Troy weight, avoirdupois weight, and apothecaries' weight are all built from the same basic unit, the grain, which is the same in all three systems. However, while each system has some overlap in the names of their units of measure (all have ounces and pounds), the relationship between the grain and these other units within each system varies.