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Assay ton (abbreviation 'AT') is not a unit of measurement but a standard quantity used in assaying ores of precious metals. A short assay ton is approximately 29.17 g (1.029 oz) and a long assay ton is approximately 32.67 g (1.152 oz). [12] [citation needed] These amounts bear the same ratio to a milligram as a short or long ton bears to a ...
Troy weight is a system of units of mass that originated in the Kingdom of England in the 15th century [ 1 ] and is primarily used in the precious metals industry. The troy weight units are the grain, the pennyweight (24 grains), the troy ounce (20 pennyweights), and the troy pound (12 troy ounces). The troy grain is equal to the grain unit of ...
The imperial system has a hundredweight, defined as eight stone of 14 lb each, or 112 lb (50.80234544kg), whereas a US hundredweight is 100 lb (45.359237kg). In both systems, 20 hundredweights make a ton. In the US, the terms long ton (2240 lb, 1016.0469088kg) and short ton (2000 lb; 907.18474kg) are used. The metric ton is the name used for ...
Such scales are used to make the most accurate of fine measurements, such as in the needs of empirical chemistry. Avoirdupois (/ ˌævərdəˈpɔɪz, ˌævwɑːrdjuːˈpwɑː /; [ 1 ] abbreviated avdp.) [ 2 ] is a measurement system of weights that uses pounds and ounces as units. [ 3 ][ 4 ] It was first commonly used in the 13th century AD and ...
Unit system. British imperial. Unit of. Mass. Abbreviation. st. The stone or stone weight (abbreviation: st.) [ 1 ] is an English and British imperial unit of mass equal to 14 avoirdupois pounds (6.35 kg). [ nb 1 ] The stone continues in customary use in the United Kingdom and Ireland for body weight.
Tonne. The tonne (/ tʌn / ⓘ or / tɒn /; symbol: t) is a unit of mass equal to 1,000 kilograms. It is a non-SI unit accepted for use with SI. It is also referred to as a metric ton in the United States to distinguish it from the non-metric units of the short ton (United States customary units) and the long ton (British imperial units).
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.
60 minims or 'drops' or 1 ⁄ 8 fluid ounce (fl oz). See also drachm. Teaspoon: 5 mL: 80 minim or drops or 1 ⁄ 6 fl oz Tablespoon: 15 mL: 4 dram (240 minim or drops), 3 teaspoons, or 1 ⁄ 2 fl oz Jack: 71 mL: 1 ⁄ 2 Gill. This is not a traditional measure. Gill: 142 mL: 1 ⁄ 4 pint, or 1 ⁄ 32 gallon, in some dialects 1 ⁄ 2 pint ...