| Name | Diwa Rietz - Ideal n° 1-1 |
| Front Scales | L K A = B CI C = D S ST T |
| Back Scales | |
| Type of Rule | Slide Rule |
| Material | Plastic |
| Dimension (mm) | 295x47x5.5 |
| Area of Use | Generic |
| Origin of Rule | Alessandro Manni's Collection |
| Match Number | 7046 |
| Comment | |
| Thumbnail |  |
| Name | Diwa Rietz - Ideal n° 1-1 |
| Front Scales | L K A = B CI C = D S ST T |
| Back Scales | |
| Type of Rule | Slide Rule |
| Material | Plastic |
| Dimension (mm) | 295x47x5.5 |
| Area of Use | Generic |
| Origin of Rule | Alessandro Manni's Collection |
| Match Number | 7046 |
| Comment | |
| Thumbnail | |