Tachometer, Electrical, 400-3600 RPM, Luftwaffe Fl.20269 Drehzahlanzeiger HH-3 Helicopter This is an original Cold

This is an original Cold War-era Elapsed Time Clock

The fluid in the floating ball chamber is no longer present

C-47 Dakota

likely when they were removed from the aircraft

as used in aircraft of the German Luftwaffe

Tachometer, Electrical, 400-3600 RPM, Luftwaffe Fl.20269 Drehzahlanzeiger HH-3 Helicopter This is an original ColdHere 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 last digit of the Fl number is difficult to discern, but the instrument is identical to that listed at the reference site