Pilot Director Indicator as used with C-1 Autopilot, WWII B-29, B-24. B-17 PV-2 Harpoon like your father or grandfather

like your father or grandfather (or WAC grandma

1960s and 1970s

made by Pioneer div of Bendix

such as the F7F Tigercat fighter and versions of the PBY Catalina and PBM-5 Mariner patrol bombers (see illustration from the F7F flight manual dated 1947)

Ammeter DC 0-10 Amps Weston model 301

Pilot Director Indicator as used with C-1 Autopilot, WWII B-29, B-24. B-17 PV-2 Harpoon like your father or grandfatherThe 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