Pilot Director Indicator as used with C-1 Autopilot, WWII B-29, B-24, B-17 (B) B-47 but could possibly be repaired

but could possibly be repaired

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

This instrument is stamped with a service date of December 1959

The instrument contains a bellows for measuring change in altitude/barometric pressure and a rotating strip chart recorder drum

Pilot Director Indicator as used with C-1 Autopilot, WWII B-29, B-24, B-17 (B) B-47 but could possibly be repairedThe 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