Tachometer, New Old Stock PN 656K-03, P-51, P-47 Douglas

Tachometer, New Old Stock PN 656K-03, P-51, P-47 DouglasHere is an authentic original WWII era Electrical Tachometer Indicator Kollsman part number 656K 03 (US Army Type E 9), as used in US Army Air Force fighters P 38 Lightning, P 39 Airacobra, P 47 Thunderbolt, P 51 Mustang, and P 63 King Cobra. This specimen is New Old Stock and was received by Aero Antique in its original sealed carton dated November 28, 1944, and we are the first to have opened it since then. The Army type E 9 tachometer indicator

as used in the RAF's Cold-War-era Handley Page Victor strategic bomber

The subsequent Kollsman model 716K-02

Maximum Allowable

This critical component was installed at the nose gunner's station in the B-36

C and D versions

Measures 10

The manual for the sight can be viewed at ibiblio

used to measure the exiting temperature of the exhaust gases of a jet engine

Across the inside of the ring are two horizontal

Measures ~5 inches diameter

~8 inches deep

000 rpm in the case of later models (other dial)