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  2. Troy weight - Wikipedia

    en.wikipedia.org/wiki/Troy_weight

    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. The troy weight units are the grain, the pennyweight (24 grains), the troy ounce (20 pennyweights), and the troy pound (12 troy ounces). The troy grain is equal to the grain unit of ...

  3. TNT equivalent - Wikipedia

    en.wikipedia.org/wiki/TNT_equivalent

    TNT equivalent is a convention for expressing energy, typically used to describe the energy released in an explosion. The ton of TNT is a unit of energy defined by convention to be 4.184 gigajoules (1 gigacalorie), [ 1 ] which is the approximate energy released in the detonation of a metric ton (1,000 kilograms) of TNT.

  4. 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 ...

  5. United States customary units - Wikipedia

    en.wikipedia.org/wiki/United_States_customary_units

    Length. [edit] For measuring length, the U.S. customary system uses the inch, foot, yard, and mile, which are the only four customary length measurements in everyday use. From 1893, the foot was legally defined as exactly 1200⁄3937 m (approximately 0.3048006m). [ 13 ]

  6. Indian units of measurement - Wikipedia

    en.wikipedia.org/wiki/Indian_units_of_measurement

    1 Kancha = 5 Siki. 1 Chhataank = 4 Kancha. 1 Chhataank = 5 Bhari. 1 Adh-pav = 2 Chhatank = 1/8 Seer. 1 Pav = 2 Adh-pav = ¼ Seer (Pav means ¼) The unit pav is still used to this date however, it has been modified to "a fourth of a kilogram". 1 Adher = 2 Pav = ½ Seer. In Hindi ½ Seer = Adha (½) Seer, or Adher.

  7. Biblical and Talmudic units of measurement - Wikipedia

    en.wikipedia.org/wiki/Biblical_and_Talmudic...

    Abraham weighs out 400 shekels of silver (about 4.4 kg, or 141 troy oz) in order to buy land for a cemetery at Machpelah. (1728 illustration, based on Genesis 23) The Babylonian system, which the Israelites followed, measured weight with units of the talent, mina, shekel (Hebrew: שקל), and giru, related to one another as follows: 1 shekel ...

  8. 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 ...

  9. Short ton - Wikipedia

    en.wikipedia.org/wiki/Short_ton

    The short ton (abbreviation tn[ 1 ]) is a measurement unit equal to 2,000 pounds (907.18 kg). It is commonly used in the United States, where it is known simply as a ton;[ 1 ] however, the term is ambiguous, the single word " ton " being variously used for short, long, and metric tons. The various tons are defined as units of mass. [ 2 ]