For the precious metals and for medicines, the pound troy, containing 5760 grains, is used, but is differently divided in the two cases. The measures are as follow:
TROY WEIGHT.
| 24 | grainsare | 1 pennyweight | 1 dwt. |
| 20 | pennyweights | 1 ounce | 1 oz. |
| 12 | ounces | 1 pound | 1 lb. |
The pound troy contains 5760 grains. A cubic foot of water weighs 75·7374 pounds troy, or 908·8488 ounces.
APOTHECARIES’ WEIGHT.
| 20 | grainsare | 1 scruple | ℈ |
| 3 | scruples | 1 dram | ʒ |
| 8 | drams | 1 ounce | ℥ |
| 12 | ounces | 1 pound | lb |
218. The standard coins of copper, silver, and gold, are,—the penny, which is 10⅔ drams of copper; the shilling, which weighs 3 pennyweights 15 grains, of which 3 parts out of 40 are alloy, and the rest pure silver; and the sovereign, weighing 5 pennyweights and 3¼ grains, of which 1 part out of 12 is copper, and the rest pure gold.
MEASURES OF MONEY.
The lowest coin is a farthing, which is marked thus, ¼, being one fourth of a penny.
| 2 | farthings are | 1 halfpenny | ½d. |
| 2 | halfpence | 1 penny | 1d. |
| 12 | pence | 1 shilling | 1s. |
| 20 | shillings | 1 pound[42] or sovereign | £1 |
| 21 | shillings | 1 guinea.[43] |