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  2. Grain (unit) - Wikipedia

    en.wikipedia.org/wiki/Grain_(unit)

    64.79891 mg. A grain is a unit of measurement of mass, and in the troy weight, avoirdupois, and apothecaries' systems, equal to exactly 64.798 91 milligrams. It is nominally based upon the mass of a single ideal seed of a cereal. From the Bronze Age into the Renaissance, the average masses of wheat and barley grains were part of the legal ...

  3. Ounce - Wikipedia

    en.wikipedia.org/wiki/Ounce

    A troy ounce (abbreviated oz t) is equal to 480 grains. Consequently, the international troy ounce is equal to exactly 31.1034768 grams. There are 12 troy ounces in the now obsolete troy pound. Today, the troy ounce is used only to express the mass of precious metals such as gold, platinum, palladium, rhodium or silver.

  4. Gram - Wikipedia

    en.wikipedia.org/wiki/Gram

    U.S. customary. 0.0352740 ounces. Atomic mass units. 6.022 140 76 × 1023 Da. The gram (originally gramme; [1] SI unit symbol g) is a unit of mass in the International System of Units (SI) equal to one thousandth of a kilogram . Originally defined as of 1795 as "the absolute weight of a volume of pure water equal to the cube of the hundredth ...

  5. Fluid ounce - Wikipedia

    en.wikipedia.org/wiki/Fluid_ounce

    A fluid ounce (abbreviated fl oz, fl. oz. or oz. fl., old forms ℥, fl ℥, f℥, ƒ ℥) is a unit of volume (also called capacity) typically used for measuring liquids. The British Imperial , the United States customary , and the United States food labeling fluid ounce are the three that are still in common use, although various definitions ...

  6. Avoirdupois - Wikipedia

    en.wikipedia.org/wiki/Avoirdupois

    Such scales are used to make the most accurate of fine measurements, such as in the needs of empirical chemistry. Avoirdupois ( / ˌævərdəˈpɔɪz, ˌævwɑːrdjuːˈpwɑː /; [1] abbreviated avdp.) [2] is a measurement system of weights that uses pounds and ounces as units. [3] [4] It was first commonly used in the 13th century AD and was ...

  7. Carat (mass) - Wikipedia

    en.wikipedia.org/wiki/Carat_(mass)

    Diamond-weighing kit, with weights labelled in grams and carats. The carat ( ct) is a unit of mass equal to 200 mg (0.00705 oz; 0.00643 ozt ), which is used for measuring gemstones and pearls . The current definition, sometimes known as the metric carat, was adopted in 1907 at the Fourth General Conference on Weights and Measures, [1] [2] and ...

  8. Conversion of units - Wikipedia

    en.wikipedia.org/wiki/Conversion_of_units

    Conversion of units is the conversion of the unit of measurement in which a quantity is expressed, typically through a multiplicative conversion factor that changes the unit without changing the quantity. This is also often loosely taken to include replacement of a quantity with a corresponding quantity that describes the same physical property.

  9. Alcohol measurements - Wikipedia

    en.wikipedia.org/wiki/Alcohol_measurements

    189.42 mL. 6.39 US fl oz. 6.66 imp oz. 1⁄3 of an Imperial pint. Short for Nipperkin. Strong ale and Barley wine were usually bottled in nips [3] Metric measurement glasses and containers usually round up to a metric half pint of 200 mL (7 imp oz). small glass (US) 236.59 mL. 8 US fl oz.