Fuel Quantity Indicator, Simmonds Pacitor 0-5800 lbs Liaison Aircraft It is also stamped with

It is also stamped with the wing logo of Naval Air Station Alameda (CA)

BMEP is the acronym for Brake Mean Effective Pressure

The Pilot Director Indicator (PDI) was used during WWII in bombers of the US Army Air Force

The Master Compass Indicator AN5752-2 was an integral component of the WWII era Bendix Gyro Flux Gate Compass System used in aircraft such as the B-17

and Martin P5M Marlin Floatplane of the US Navy

Fuel Quantity Indicator, Simmonds Pacitor 0-5800 lbs Liaison Aircraft It is also stamped withThis is what seems to be a 1950s vintage aircraft Fuel Quantity Indicator made by Simmonds Aerospace under the Pacitor brand name, part # 37413 203A. We have not been able to link this to a specific aircraft, but we recently sold another with US Navy label on its case and 1955 service label. The instrument is in exceptional condition for its age. The dial markings are clear and the glass and case are intact. Measures ~2. 5in diameter and ~3. 5inches