Compass, Hand Bearing, Type O.6.A., Ref 6A/1248, with Original Case JU-52 That's about all I can

That's about all I can determine without having a manual

the need for the contactor disappeared and true IFF (Identification Friend or Foe) transponders took their place

and should be considered a incomplete artifact

this appears very similar to the MkXVII type

Shows aircraft deviation from the selected course

Compass, Hand Bearing, Type O.6.A., Ref 6A/1248, with Original Case JU-52 That's about all I canHere is a WWII era Hand Bearing Compass, Type O. 6. A., in its original wooden case, as used in aircraft of the British RAF Coastal Command. The 06. A. is hand held compass, used by an observer (hence the "O" designation. Reference numbers for pilot compasses began with "P") to take navigational bearings in situations where a fixed compass could not be used, or to determine correction factors for fixed compasses. The handle holds batteries (not