| Name | Blundell 503 D Commerce Academy Variant |
| Front Scales | L K A = B CI C = D LL3 LL2 |
| Back Scales | M1 M2 1) = 2) 3) C = D M3 M4 |
| Type of Rule | slide rule |
| Material | PVC |
| Dimension (mm) | 342x49x3.5 |
| Area of Use | financial |
| Origin of Rule | IJzebrand Schuitema |
| Match Number | 535 |
| Comment | |
| Thumbnail |  |