| Level | Item |
| Reference Number (click to see whole series/group) | F15/6 |
| Extent | 1 file |
| Title | FRESHFIELDS PAPERS RELATING TO MACHINERY AND OTHER EQUIPMENT: PAPERS CONCERNING WILLIAM COTTON'S WEIGHING MACHINE |
| Date | 1842 - 1847 |
| Description | Correspondence regarding grant of patent for coin weighing machine invented by Governor Cotton. Copy of Letters Patent. |