Tachometer, Electric, Kollsman 377 Series 4000 RPM P-47 Airspeed Indicators

Airspeed Indicators

Liquidometer

The metal housing hosts some rust which could be removed with care

It measures 2in diameter by 3 in deep

the USMC air station in North Carolina

Tachometer, Electric, Kollsman 377 Series 4000 RPM P-47 Airspeed IndicatorsThis WWII era, single engine electric Tachometer was in the 377 series from Kollsman. The pointer rotates clockwise one full rotation to 2000 RPM, and another full rotation to 4000 RPM. The aircraft from which this instrument was removed appears to have had an upper operating limit of 2800 RPM judging from the limit markings in thin red tape that have been applied upon the numerical scale beneath the glass. The type of aircraft which used this