| Name | Graphoplex 643 Electro Log Log |
| Front Scales | 13cm / L cos B3 B2 = b2 a b = B LL3 LL2 LL1 |
| Back Scales | = S&T S T b = |
| Type of Rule | slide rule |
| Material | plastic |
| Dimension (mm) | 152x45x4.5 |
| Area of Use | generic |
| Origin of Rule | actual item |
| Match Number | 1318 |
| Comment | |
| Thumbnail | No Picture |