| Name | London Name Plate Mark IV 6B / 345 Height and Air Speed |
| Front Scales | |
| Back Scales | |
| Type of Rule | disc(s) |
| Material | metal |
| Dimension (mm) | 230x10 |
| Area of Use | aviation |
| Origin of Rule | Herman van Herwijnen |
| Match Number | 1682 |
| Comment | |
| Thumbnail |  |
| Name | London Name Plate Mark IV 6B / 345 Height and Air Speed |
| Front Scales | |
| Back Scales | |
| Type of Rule | disc(s) |
| Material | metal |
| Dimension (mm) | 230x10 |
| Area of Use | aviation |
| Origin of Rule | Herman van Herwijnen |
| Match Number | 1682 |
| Comment | |
| Thumbnail | |