Apothecaries’ Weight is used by apothecaries and physicians weighing
medicines for prescriptions.
TABLE
20 grains (gr.) = 1 scruple (sc., or ℈)
2 scruples = 1 dram (dr., or ʒ)
8 drams = 1 ounce (oz., or ℥)
12 ounces = 1 pound (lb., or ℔)
Pound Ounces Drams Scruples Grains
1 = 12 = 96 = 288 = 5760
1. In writing prescriptions, physicians express the number in Roman
characters, using j instead of i final. They also write the symbol
first; thus: ℥v, ʒvj, ℈ij.