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A pennyweight (dwt) is a unit of mass equal to 24 grains, 1 ⁄ 20 of a troy ounce, 1 ⁄ 240 of a troy pound, approximately 0.054857 avoirdupois ounce [1] and exactly 1.55517384 grams. [2] It is abbreviated dwt , d standing for denarius – (an ancient Roman coin), and later used as the symbol of an old British penny (see £sd ).
One-troy-ounce (480 gr; 31 g) samples of germanium, iron, aluminium, rhenium and osmium A Good Delivery silver bar weighing 1,000 troy ounces (83 troy pounds; 31 kg) Troy weight is a system of units of mass that originated in the Kingdom of England in the 15th century [ 1 ] and is primarily used in the precious metals industry.
Table of equivalences English unit SI (metric) Traditional definition Line: 2.12 mm = 1 ⁄ 4 of a barleycorn, [13] (thus 1 ⁄ 12 of an inch). Barleycorn: 8.47 mm = 1 ⁄ 3 of an inch, the notional base unit under the Composition of Yards and Perches. Digit: 19.05 mm = 3 ⁄ 4 inch Finger: 22.23 mm = 7 ⁄ 8 inch Inch: 25.4 mm
The table below lists units supported by {{convert}}. More complete lists are linked for each dimension. For a complete list of all dimensions, see full list of units. {{Convert}} uses unit-codes, which are similar to, but not necessarily exactly the same as, the usual written abbreviation for a given unit. These unit-codes are displayed in ...
See Weight for detail of mass/weight distinction and conversion. Avoirdupois is a system of mass based on a pound of 16 ounces, while Troy weight is the system of mass where 12 troy ounces equals one troy pound. The symbol g 0 is used to denote standard gravity in order to avoid confusion with the (upright) g symbol for gram.
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Deadweight tonnage (also known as deadweight; abbreviated to DWT, D.W.T., d.w.t., or dwt) or tons deadweight (DWT) is a measure of how much weight a ship can carry. [ 1 ] [ 2 ] [ 3 ] It is the sum of the weights of cargo , fuel, fresh water , ballast water , provisions, passengers, and crew .
For example, 1 troy ounce of 18 karat gold (which is 75% gold) may be said to have a fine weight of 0.75 troy ounces. Most modern government-issued bullion coins specify their fine weight. For example, the American Gold Eagle is embossed One Oz. Fine Gold and weighs 1.091 troy oz.