Ammeter, DC, Dual Engine, Weston 827 Type 28Y1, C-121 Lockheed Constellation PV-1 Ventura This Recognition Light Control Assembly

This Recognition Light Control Assembly appeared in a number of US Army Air Force aircraft of WW2

The photos show both the external and internal workings of the gun sight: an exquisite electro-mechanical computer developed well before the era of microchips

Not yet confirmed

The MC-125 Tuning Unit is a component of the WWII-era airborne communication system Receiving and Transmitting Command Set SCR-AJ(and AL)-183

The 1958 Flight Manual of the Lockheed C-121 Constellation shows these instruments located on the pilots instrument panel as well the flight engineer's panel

Ammeter, DC, Dual Engine, Weston 827 Type 28Y1, C-121 Lockheed Constellation PV-1 Ventura This Recognition Light Control AssemblyThis is a dual DC Ammeter, 0 450 amps, as used in the US Air Force C 121 transport version of the Lockheed Constellation. See photo of the location of the instrument on the MJB 1 control panel from the C 121 flight manual dated 1958. This instrument has a date stamp of 1957. Measures 3. 25 inches diameter and 3 inches deep.