Information AboutTroy Ounce |
| CATEGORIES ABOUT TROY WEIGHT | |
| units of mass | |
| gold | |
| gold investments | |
| systems of units | |
| SHOPPER'S DELIGHT | |
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HISTORY Troy weight originates from what was called the troy system of mass. Dating back to before the time of William The Conqueror , the name comes from the city of Troyes in France , an important trading city in the Middle Ages . UNITS Troy ounce A troy ounce, the only currently used unit of the system, is 480 Grain s, somewhat heavier than an Avoirdupois ounce (437.5 grains). A grain is exactly 64.798 91 Mg , hence one troy ounce is exactly 31.103 476 8 G , about 10 per cent more than the avoirdupois ounce, which is exactly 28.349 523 125 g. The troy ounce is the only ounce used in the pricing of precious metals, such as Gold , Platinum , and Silver , and this is the only remaining use of the troy ounce. In troy weight, there are 12 Ounce s in a Pound , rather than 16 in the more-common avoirdupois system. The troy ounce may be abbreviated to '''ozt'''. Troy pound A troy pound is 5760 grains (about 373.24 g), while an avoirdupois pound is 7000 grains (about 453.59 g). Conversions SEE ALSO |