Exhaust Gas Temperature EGT Indicator, Type K-9, F-11 Tiger USSR It was used in the

It was used in the H-21 Shawnee/Workhorse Piasecki Helicopter

The glass is intact

or Machmeter

The data label indicates that it was made for Bureau of Aeronautics US Navy ("Bu Aero USNavy") and it has the stamped anchor symbol of the USN on its rear

The pack with the aircraft graphic has not yet been idenfitied

Exhaust Gas Temperature EGT Indicator, Type K-9, F-11 Tiger USSR It was used in theHere is an Exhaust Temperature Indicator, Type K 9, used to measure the exiting temperature of the exhaust gases of a jet engine, from 0 1,000 deg C. Made by Lewis Engineering part # 149E27 spec MIL I 5943. The closest example in appearance was used in the 1960's US Navy jet fighter Grumman F 11 Tiger, see photo of F 11 instrument panel. It is in fine condition given its age. The operating limits for the aircraft in which it was installed are marked