| Name | London Name Plate Mark II 6B / 131 Height and Air Speed |
| Front Scales | 1) 2)a+b 3) 4) 5) |
| Back Scales | |
| Type of Rule | disc(s) |
| Material | metal |
| Dimension (mm) | 146x10 |
| Area of Use | aviation |
| Origin of Rule | IJzebrand Schuitema |
| Match Number | 1680 |
| Comment | |
| Thumbnail |  |