| Name | Thornton 3649 |
| Front Scales | 27cm / LL2 A = B CI C = D LL3 \ 10inch |
| Back Scales | = S L T = |
| Type of Rule | slide rule |
| Material | wood/plastic |
| Dimension (mm) | 291x41x11.5 |
| Area of Use | generic |
| Origin of Rule | Herman van Herwijnen |
| Match Number | 3071 |
| Comment | |
| Thumbnail |  |