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Article: Troy weight

Troy weight

Etymology and History of Troy Weight

  • Troy weight takes its name from the French market town of Troyes.
  • The name 'troy' is first attested in 1390.
  • Charles Moore Watson proposes an alternative etymology related to the Assize of Weights and Measures.
  • Troy weight referred to the tower system.
  • The origin of the troy weight system is unknown.
  • English troy weights were nearly identical to the troy weight system of Bremen.
  • The troy weight system was indirectly derived from the Roman monetary system.
  • Troy weights were first used in England in the 15th century.
  • The troy ounce was officially adopted for coinage in 1527.

Units of Measurement in Troy Weight

  • The troy pound consists of twelve troy ounces.
  • A troy ounce weighs 480 grains.
  • The pennyweight weighs 24 grains.
  • There is no specific troy grain; all Imperial systems use the same measure of mass called a grain.
  • Mint masses were legalized by Act of Parliament and have specific conversions.
  • The standard British troy pound consists of twelve troy ounces.
  • The troy pound is 5760 grains or 373.24172 grams.
  • An avoirdupois pound is approximately 21.53% heavier than a troy pound.
  • A troy ounce weighs 480 grains.
  • The grain measure is defined as precisely 64.79891 milligrams.
  • One troy ounce is approximately 31.10347680 grams.
  • A troy ounce is about 9.7% more than an ounce avoirdupois.

Troy Weight in Bullion Coins

  • Bullion coins are made from precious metals such as gold, silver, platinum, or palladium.
  • They are used as an investment or store of value.
  • Bullion coins are typically minted by government or private mints.
  • They are usually sold at a premium above the intrinsic value of the metal.
  • The weight and purity of bullion coins are guaranteed by the issuing authority.

Carat (Mass) and Conversion of Units

  • The carat is a unit of mass used for measuring gemstones and pearls.
  • It is equal to 200 milligrams or 0.2 grams.
  • The carat is divided into 100 points, with each point representing 0.01 carats.
  • The carat weight of a gemstone is an important factor in determining its value.
  • The term 'carat' is derived from the carob seed, which was historically used as a counterweight in balance scales.
  • Conversion of units is the process of changing the measurement of a quantity from one unit to another.
  • In the case of troy weight, it can be converted to other units such as grams or ounces.
  • Conversion factors are used to convert between different units of weight.
  • Conversion tables or calculators can be used to simplify the conversion process.
  • It is important to use accurate conversion factors to ensure precise measurements.

Fluid Ounce and Mark (Unit)

  • The fluid ounce is a unit of volume used to measure liquids.
  • In the troy weight system, the fluid ounce is equal to 480 grains or approximately 31.1035 grams.
  • The fluid ounce is commonly used in the United States and other countries that use the imperial system.
  • It is abbreviated as 'fl oz' or 'oz fl.'
  • The fluid ounce is different from the avoirdupois ounce, which is used to measure weight.
  • The mark is an obsolete unit of weight in the troy weight system.
  • It was equal to 8 ounces or 248 grams.
  • The mark was used in medieval Europe for measuring precious metals.
  • It was commonly used in trade and commerce.
  • The mark is no longer in official use but is sometimes used in historical or ceremonial contexts.

Troy weight Data Sources

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