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- Troy_ounce abstract "The troy ounce (oz t) is a unit of imperial measure. In the present day it is most commonly used to gauge the mass of precious metals. One troy ounce is currently defined as exactly 0.0311034768 kg or 31.1034768 g. There are approximately 32.15 troy oz in 1 kg. One troy ounce is equivalent to approximately 1.09714 avoirdupois ounces.The troy ounce is part of the troy weights system, many aspects of which were indirectly derived from the Roman monetary system. The Romans used bronze bars of varying weights as currency. An aes grave weighed equal to 1 pound. One twelfth of an aes grave was called an uncia, or in English an "ounce". Later standardization would change the ounce to 1/16 of a pound (the avoirdupois ounce), but the troy ounce, which is 1/12 of a troy pound (note that a troy pound is lighter than an avoirdupois pound), has been retained for the measure of precious metals. At 480 grains, the troy ounce is heavier than the avoirdupois ounce, which weighs 450 grains (g) (exact by definition), about 10 percent more than the avoirdupois ounce, which is 28.349523125 g (exact).To maintain purity standards and common measures across time, the troy ounce was retained over the avoirdupois ounce in the weighing and pricing of gold, platinum, silver. Likewise, the grain, identical in both the troy and avoirdupois systems, is still used to measure arrow and arrowhead weights in archery along with projectile (bullet) and propellant (powder) weights in ballistics. The troy ounce and grain were also common to the apothecaries' system long used in medicine, but have been largely replaced by milligrams.".
- Troy_ounce thumbnail American_Platinum_Eagle_2008_Proof_Rev.jpg?width=300.
- Troy_ounce wikiPageID "31142".
- Troy_ounce wikiPageRevisionID "604212832".
- Troy_ounce hasPhotoCollection Troy_ounce.
- Troy_ounce subject Category:Precious_metals.
- Troy_ounce subject Category:Units_of_mass.
- Troy_ounce comment "The troy ounce (oz t) is a unit of imperial measure. In the present day it is most commonly used to gauge the mass of precious metals. One troy ounce is currently defined as exactly 0.0311034768 kg or 31.1034768 g. There are approximately 32.15 troy oz in 1 kg. One troy ounce is equivalent to approximately 1.09714 avoirdupois ounces.The troy ounce is part of the troy weights system, many aspects of which were indirectly derived from the Roman monetary system.".
- Troy_ounce label "Feinunze".
- Troy_ounce label "Once troy".
- Troy_ounce label "Oncia troy".
- Troy_ounce label "Troy ounce".
- Troy_ounce label "Troy ounce".
- Troy_ounce label "Тройская унция".
- Troy_ounce label "الأوقية الترويسية".
- Troy_ounce label "トロイオンス".
- Troy_ounce sameAs Troyská_unce.
- Troy_ounce sameAs Feinunze.
- Troy_ounce sameAs Once_troy.
- Troy_ounce sameAs Oncia_troy.
- Troy_ounce sameAs トロイオンス.
- Troy_ounce sameAs 트로이_온스.
- Troy_ounce sameAs Troy_ounce.
- Troy_ounce sameAs m.05_5qwp.
- Troy_ounce sameAs Q1323615.
- Troy_ounce sameAs Q1323615.
- Troy_ounce wasDerivedFrom Troy_ounce?oldid=604212832.
- Troy_ounce depiction American_Platinum_Eagle_2008_Proof_Rev.jpg.
- Troy_ounce isPrimaryTopicOf Troy_ounce.