1911 Encyclopædia Britannica/Avoirdupois

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AVOIRDUPOIS, or Averdupois (from the French avoir de pois, goods of weight), the name of a system of weights used in Great Britain and America for all commodities except the precious metals, gems and medicines. The foundation of the system is the grain. A cubic inch of water weighs 252.458 grains. Of this grain 7000 now (see Weights and Measures) make a pound avoirdupois. This pound is divided into 16 oz., and these ounces into 16 drachms.


Avoirdupois Weight.

Drachm,

16=ounce,

16=pound,

14=stone,

2=quarter,

4=hundred,

20=ton.

27.3 grains

437.5

7000

98,000

196,000 grs.

112 lb

2240 lb.