| Name | Ricoh 505 |
| Front Scales | inch=A = B CI C = D K=cm |
| Back Scales | S L T |
| Type of Rule | Slide Rule |
| Material | Wood/Plastic |
| Dimension (mm) | 148X28X6 |
| Area of Use | Generic |
| Origin of Rule | Jack Segal's Collection |
| Match Number | 7027 |
| Comment | Conversion data on back of rule |
| Thumbnail |  |