Science
Constants - Apothecaries' Ounce

Symbol: oz (apoth)
oz (ap.)
Value: 3.110347680 × 10-2 kg
Category: Units of Mass - Units of Mass
Description: The Apothecaries' Ounce was used at one time as a measurement of weight for drugs and other medical substances in Britain and America. It is now obsolete, being replaced by the SI kilogram.
1 oz (ap.) = 1/12 lb (ap.)
1 oz (ap.) = 8 drachms (ap.)
1 oz (ap.) = 24 scruples (ap.)
1 oz (ap.) = 480 grains (ap.)