Magnet holder - aircraft compass
        
        Black plastic corrector box. Containing two independent pairs of magnets operated by bevel gearing inside box and rotated by square-headed key.
              
      
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Object Details
| ID: | ACO1164 | 
|---|---|
| Type: | Magnet holder - aircraft compass | 
| Display location: | Not on display | 
| Creator: | Air Ministry | 
| Date made: | 1940 | 
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory | 
| Measurements: | Overall: 40 mm x 62 mm x 62 mm | 
