| Accession Number | REL/05023 |
|---|---|
| Collection type | Technology |
| Object type | Aircraft component |
| Maker |
Unknown |
| Place made | France: Paris |
| Date made | c1918 |
| Conflict |
First World War, 1914-1918 |
Aircraft Compass (France)
Description
Magnetic card compass which has probably been removed from an aeroplane. The bowl is attached by springs to a brass gimbal. The bowl is also made of brass and has been painted light grey, with the name R W Donaldson scratched into the base. The revolving card is calibrated in degrees while an 'O' has been painted in the position which normally indicates- west. This is the first letter of the French word- Ouest- meaning west. The words 'Made in Paris' have also been painted on the face of the compass rose.
No manufacturer's markings or serial. The casing is 91 mm dia; the glass is 79 mm dia. The base of the brass gimbal frame support is 50 mm x 40 to 48 mm wide where it curves to two arms that hold the springs that suport the bowl. The arms taper from 16 mm at the base to 7 mm at the top where they narrow further to the spring locations. The arms of the gimbal are recessed in their rear. Three springs each side 22 mm apart.
History / Summary
The compass was mounted as far from magnetic metal as possible to avoid interference with its operation. Compasses were essential for aerial navigation.