| Name | Faber Castell 31 C Klawun |
| Front Scales | 14cm / K A = B CI C = D L |
| Back Scales | = sin sin/tg tg = |
| Type of Rule | slide rule |
| Material | plastic |
| Dimension (mm) | 153x33x4.5 |
| Area of Use | generic |
| Origin of Rule | actual item |
| Match Number | 852 |
| Comment | |
| Thumbnail | No Picture |