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Definição
Unidade de massa igual a 1/7000 de libra (64,799 mg).
Explicação
Originally based on the weight of a single grain of barley. Still used for bullet weights and pharmaceutical measurements.
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RELATED TERMS
Sistema Imperial
Sistema de medição utilizado principalmente nos Estados Unidos, baseado em unidades inglesas históricas.
Peso Troy
Sistema de pesos utilizado para metais preciosos e pedras preciosas.
Avoirdupois
O sistema padrão de pesos baseado na libra de 16 onças, usado para mercadorias cotidianas.
Cavalo-Vapor
Unidade de potência; o cavalo-vapor mecânico equivale a aproximadamente 745,7 watts.
BTU (Unidade Térmica Britânica)
A quantidade de calor necessária para elevar a temperatura de uma libra de água em um grau Fahrenheit.