| Name | Diwa 201 Technical Variant |
| Front Scales | 27cm / K A = B CI C = D L ] 1:25 |
| Back Scales | = S S&T T = |
| Type of Rule | slide rule |
| Material | wood/plastic |
| Dimension (mm) | 290x38.6x11.3 |
| Area of Use | generic |
| Origin of Rule | Herman van Herwijnen |
| Match Number | 750 |
| Comment | |
| Thumbnail |  |