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It's the avoirdupois ounce (exactly 28.349523125 g) for everything but precious metals, where the Troy ounce is used (exactly 31.1034768 g).
by maxnoe 3y ago
It's the avoirdupois ounce (exactly 28.349523125 g) for everything but precious metals, where the Troy ounce is used (exactly 31.1034768 g).