Pilot Director Indicator as used with C-1 Autopilot, WWII B-29, B-24. B-17 Dinah Reconaissance The lens appears to be

The lens appears to be a plastic material

The decals are in mint condition

Measures approximately 10 inches long by 5 inches by 6 inches

the short pointer begins to rotate clockwise

so likely from a US Navy or US Air Force aircraft

Pilot Director Indicator as used with C-1 Autopilot, WWII B-29, B-24. B-17 Dinah Reconaissance The lens appears to beThe Pilot Director Indicator (PDI) was used during WWII in bombers of the US Army Air Force, including heavy bombers B 17 Flying Fortress, B 24 Liberator, and B 29 Superfortress and medium bombers B 25 Mitchell and B 26 Marauder, and US Navy's PBY5A Catalina and PB4Y Privateer. The PDI was located on the pilots instrument panel, and received signals from the bombardier to indicate his desired course changes, left or right, to obtain an accurate bomb