| Name | Roos SR 107 A The Roos Company |
| Front Scales | 10inch / A = B CI C = D K ] 25cm |
| Back Scales | = S L T = |
| Type of Rule | slide rule |
| Material | wood/plastic |
| Dimension (mm) | 268x34x9.5 |
| Area of Use | generic |
| Origin of Rule | actual item |
| Match Number | 2285 |
| Comment | |
| Thumbnail | No Picture |