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Definition of Troy grain
1. Noun. a unit of mass, equal to 1/24 of a pennyweight or 1/480 of a troy ounce, fixed at (nowrap 0.064?798?91 grams) under the metric system ¹
¹ Source: wiktionary.com
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1. Noun. a unit of mass, equal to 1/24 of a pennyweight or 1/480 of a troy ounce, fixed at (nowrap 0.064?798?91 grams) under the metric system ¹
¹ Source: wiktionary.com