| Name | Royal 1053 Ecola Variant |
| Front Scales | L K A = B CI C = D S ST T |
| Back Scales | 25cm = S LL2 LL3 = 8inch |
| Type of Rule | slide rule |
| Material | plastic |
| Dimension (mm) | 330x44.9x3.6 |
| Area of Use | generic |
| Origin of Rule | Panagiotis Venetianos |
| Match Number | 2292 |
| Comment | |
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