| Name | Ecobra R 141 Rietz Variant |
| Front Scales | 13cm / A = B CI C = D K \ 5inch |
| Back Scales | = S L T = |
| Type of Rule | slide rule |
| Material | plastic |
| Dimension (mm) | 155x37x 4.2 |
| Area of Use | generic |
| Origin of Rule | Herman van Herwijnen |
| Match Number | 815 |
| Comment | |
| Thumbnail |  |