| Name | Diwa 501 - 1 Rietz Variant |
| Front Scales | 25cm 10inch / K A = B CI C = D L |
| Back Scales | = S ST T = |
| Type of Rule | slide rule |
| Material | plastic |
| Dimension (mm) | 295x37.4x5.5 |
| Area of Use | generic |
| Origin of Rule | actual item |
| Match Number | 767 |
| Comment | |
| Thumbnail | No Picture |