Tachometer, Electrical, 400-3600 RPM, Luftwaffe Fl.20269 Drehzahlanzeiger B-24 They were only as accurate

They were only as accurate as the observers knowledge of aircraft identification and of course

but cosmetically its an exceptional specimen

I-82-A Navigators Indicator

track and calculate the information to pass this on to the gunners (usually manning 20mm to 40mm guns or a 3" gun mount typically used on auxiliary ships and small craft

Small levers on either on either side of the round 'vibration mounts' tighten and release the security of the grip of the mount to the compass body

Tachometer, Electrical, 400-3600 RPM, Luftwaffe Fl.20269 Drehzahlanzeiger B-24 They were only as accurateHere is a nice specimen of a WWII era electrical Tachometer, or Drehzahlanzeiger, as used in the German Luftwaffe aircraft Me109 G K, and Fw190D thru Ta152. This tachometer received electrical signal from a generator located proximal to the engine drive to indicate engine speed, from 400 3600 RPM. Likely made by Horn. The Fl number is illegible, but the instrument is identical to that listed at the reference site GermanLuftwaffe. com. It is in