Fuel Quantity Indicator, 5400 lbs, Minneapolis-Honeywell JG7020A13 P-51 It is in very good

It is in very good shape given its age

See diagram of A4D-1 instrument panel from its flight manual dated 1962

A few pages have a pencil marking crossing out the section and some yellow highlights

but perhaps not surprising for an artifact of its age

By gripping the knurled rim of the faceplate and turning

Fuel Quantity Indicator, 5400 lbs, Minneapolis-Honeywell JG7020A13 P-51 It is in very goodHere is a capacitance type Fuel Quantity Indicator displaying aircraft fuel quantity up to 5400 lbs. It has a date of manufacture stamped June 1952. It is in exceptional condition for its age, and was likely used on a US Air Force or US Navy aircraft during the 1950's.