| Name | HONO RIETZ 12,5 - N* 661 EXTRA |
| Front Scales | 13cm K L A = B CI C = D S T |
| Back Scales | Conversion inch/cm |
| Type of Rule | Slide Rule |
| Material | Plastic |
| Dimension (mm) | 156x42x4.3 |
| Area of Use | Generic |
| Origin of Rule | Romano Maurizio's collection |
| Match Number | 7136 |
| Comment | Mathematical slide rule sold in Italy. |
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