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Apothecaries' Weight

Used in compounding medicines.

Drugs and medicines are bought and sold by Avoirdupois weight. 20 grains.... = I scruple.....marked 8 drams. = I ounce. marked 3 3 scruples = I dram " 3 ...... 12 ounces = I pound " lb Э. a scruple; Oss, half a scruple; i, one scruple; Diss, one scruple and a half; Dij, two scruples, etc. So of, and 3, an ounce.