The avoirdupois system is a measurement system of weights which uses pounds and ounces as units.
| Avoirdupois Weight | |
|---|---|
| 27-11/32 grains | 1 dram |
| 16 drams | 1 ounce |
| 16 ounces | 1 pound |
| 25 pounds | 1 quarter |
| 4 quarters | 1 cwt. |
| 2,000 pounds | 1 short ton |
| 2,240 pounds | 1 long ton |
