| Name | London Name Plate MK 1B Seahawk 6B / 2710 Range and Endurance Computer |
| Front Scales | 1) = 2) + window 1 = window 2 and 3 |
| Back Scales | 3) = 4) + window 4 = window 5 and 6 |
| Type of Rule | disc(s) |
| Material | metal |
| Dimension (mm) | 165x5 |
| Area of Use | aviation |
| Origin of Rule | IJzebrand Schuitema |
| Match Number | 1686 |
| Comment | |
| Thumbnail |  |