| Name | Faber Castell 67/54 Darmstadt |
| Front Scales | 14cm lg / K A = B CI C = D P \ sin tg |
| Back Scales | = LL1 LL2 LL3 = |
| Type of Rule | Slide Rule |
| Material | Plastic |
| Dimension (mm) | 155x39x3.5 |
| Area of Use | Generic |
| Origin of Rule | Alessandro Manni's Collection |
| Match Number | 7070 |
| Comment | Presumably dated XI-1940 |
| Thumbnail |  |