| Name | Graphoplex 650 Electro |
| Front Scales | 13cm / L B3 cos? B2 = b2 a b = B cos? DYNAMO MOTEUR VOLT |
| Back Scales | = S&T S T b = |
| Type of Rule | slide rule |
| Material | plastic |
| Dimension (mm) | 153x44.8x4.8 |
| Area of Use | electrical |
| Origin of Rule | Herman van Herwijnen |
| Match Number | 1321 |
| Comment | |
| Thumbnail |  |