Tachometer, Electrical, 400-3600 RPM, Luftwaffe Fl.20269 Drehzahlanzeiger HH-3 Helicopter 1000 lb bomb set at

1000 lb bomb set at No 8

as used in aircraft of the German Luftwaffe

Here is an Flight Helmet made by Gentex

The fluid in the floating ball chamber is no longer present

25 inches tall and 4lbs in weight

Tachometer, Electrical, 400-3600 RPM, Luftwaffe Fl.20269 Drehzahlanzeiger HH-3 Helicopter 1000 lb bomb set atHere 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