| Name | Graphoplex 620 d Variant |
| Front Scales | 27cm / B3 B2 = b2 a b = B L |
| Back Scales | = Scos. S&T Tctg. = |
| Type of Rule | slide rule |
| Material | plastic |
| Dimension (mm) | 292x40x6.5 |
| Area of Use | generic |
| Origin of Rule | Herman van Herwijnen |
| Match Number | 1306 |
| Comment | |
| Thumbnail |  |