Tachometer, Electrical, 400-3600 RPM, Luftwaffe Fl.20269 Drehzahlanzeiger B-24 likely made for a USAF

likely made for a USAF aircraft order in 1952

The piece is marked with the serial number of Spitfire PV202Y1AC161

really made its mark in the Korean War

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

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

Tachometer, Electrical, 400-3600 RPM, Luftwaffe Fl.20269 Drehzahlanzeiger B-24 likely made for a USAFHere 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