| Collection | GB 0231 University of Aberdeen, Special Collections |
| Level | Item |
| Ref No | MS 2131/6/V/7 |
| Alt Ref No | MS.2131.7 II (5) |
| Title | 'Rules for Calculating the Friction of Simple Machines.' |
| Date | 18th century |
| Description | 'Rules for Calculating the Friction of Simple Machines.' 12 pp. [MS.2131.7 II (5)] |
| Access Status | Open |