Oil Pressure, Dual, Supercharger Sump, Bendix Magnesyn, C-121 Lockheed Constellation PBY Catalina This is a lot of

This is a lot of 6 vintage voltmeters & ammeters

The pointers are marked L and R

MODEL OF THE YEAR 1944

and the repair activity on the F-I06 fighter-interceptor

Oil Pressure, Dual, Supercharger Sump, Bendix Magnesyn, C-121 Lockheed Constellation PBY Catalina This is a lot ofThis is a dual Oil Pressure indicator as used to measure oil pressure in the left and right hand supercharger sumps in the US Air Force C 121 transport version of the Lockheed Constellation. See photo of the location of the instrument on the air conditioning control panel from the C 121 flight manual dated 1965. Measures 3. 25 inches diameter and ~3 inches deep.