Troy weight(redirected from Troy system of mass)
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TROY WEIGHT. A weight less ponderous than the avoirdupois weight, in the proportion of seven thousand, for the latter, to five thousand seven hundred and sixty, to the former. Dane's Ab. Index, h.t. Vide Weights.
A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.