In the English-speaking world, 12ᵗʰ – 20ᵗʰ centuries, a unit of mass in the troy weight system, = ¹⁄₂₀ troy ounce = 24 grains = 1.555 173 84 grams. Abbreviated dwt. In imperial weight: link to a chart showing relationships between British imperial weights.

examples of use

PENNY-WEIGHT; this consists of 24 Grains, in Troy-Weight, each Grain weighing a Grain of Wheat gathered out of the middle of the Ear, well dry'd.

Worlidge, 1704.

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