- Types:
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grain
1/60 dram; equals an avoirdupois grain or 64.799 milligrams
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pennyweight
a unit of apothecary weight equal to 24 grains
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apothecaries' ounce, ounce, troy ounce
a unit of apothecary weight equal to 480 grains or one twelfth of a pound
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apothecaries' pound, troy pound
an apothecary weight equal to 12 ounces or 373.242 grams
