Troy & Apothecaries' Units
The troy system for precious metals and the related apothecaries' weights, all built from the same 64.79891 mg grain. 3 units are listed.
| Unit | Symbol | Quantity | Value in SI |
|---|---|---|---|
| Troy ounce | oz t | Mass | 31.1034768 g (480 grains, exact) |
| Troy pound | lb t | Mass | 373.2417216 g (5760 grains, exact) |
| Pennyweight | dwt | Mass | 1.55517384 g (24 grains, exact) |