Pilot Director Indicator as used with C-1 Autopilot, WWII B-29, B-24, B-17 (B) B-47 Measures ~5

Measures ~5

this is essentially the radar scope lens for the AN/APG-33 and -40 Radar Systems of the E-1 Fire Control System developed by Hughes Aircraft for the US Air Force

Measures 8 inches x 10

Each has a US Navy Pensacola service label from the 1960's

This instrument is stamped with a service date of December 1959

Pilot Director Indicator as used with C-1 Autopilot, WWII B-29, B-24, B-17 (B) B-47 Measures ~5The 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