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The only troy weight in widespread use is the British Imperial troy ounce and its American counterpart. Both are based on a grain of 0.06479891 gram (exact, by definition), with 480 grains to a troy ounce (compared with 437 + 1 ⁄ 2 grains for an ounce avoirdupois). The British Empire abolished the 12-ounce troy pound in the 19th century.
C-19 [9] One gram is thus approximately equivalent to 15.432 36 grains. [6]: C-13 The unit formerly used by jewellers to measure pearls, diamonds, and other precious stones, called the jeweller's grain or pearl grain, is equal to 1 ⁄ 4 carat (50 mg; 0.77 gr). [5] The grain was also the name of a traditional French unit equal to 53.115 mg. [5]
The factor–label method can convert only unit quantities for which the units are in a linear relationship intersecting at 0 (ratio scale in Stevens's typology). Most conversions fit this paradigm. An example for which it cannot be used is the conversion between the Celsius scale and the Kelvin scale (or the Fahrenheit scale). Between degrees ...
Volume to mass conversions for some common cooking ingredients; ingredient density g/mL [note 5] metric cup 250 mL imperial cup ≈284 mL U.S. customary cup ≈237 mL [note 6] g oz g oz g oz water [note 7] 1 [note 8] 249–250 8.8 283–284 10 236–237 8.3 [note 9] granulated sugar 0.8 [20] 200 7.0 230 8.0 190 6.7 wheat flour 0.5–0.6 [20 ...
Convenient "pau" units of both 200 grams and 250 grams are in current use in retail sales in different parts of the country. In Pakistan, the pao was slightly heavier, at 233.3 grams. [6] As to Afghanistan, it was reported in 1950 that 1 pao ≈ 1 lb (450 grams) in Kabul, with four paos to one charak and sixteen paos to a seer. [7]
The troy ounce is the only unit of the system in current use; it is used for precious metals. Although the troy ounce is larger than its avoirdupois equivalent, the pound is smaller. The obsolete troy pound was divided into 12 ounces, rather than the 16 ounces per pound of the avoirdupois system.
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The gram (alternative spelling: gramme; SI unit symbol: g) is a metric system unit of mass. A gram is defined as one thousandth of the SI base unit, the kilogram , or 1 × 10 −3 kg . Square metre (alternative spelling: square meter; SI unit symbol: m 2 ) is a superficial area equal to that of a square whose sides' lengths are each one metre.