Flight Computer Indicator Type A-1 & A-2 and Zero Reader Lancaster such as the US Army

such as the US Army Air Force P-51 Mustang and US Navy Fighter F4U Corsair

with rotating wheels and tabs

and the TBM Avenger (as the Tarpon)

This specimen no longer contains the compass dampening fluid

and indicates to the pilot the desired direction

Flight Computer Indicator Type A-1 & A-2 and Zero Reader Lancaster such as the US ArmyThis is a Cold War era Flight Computer (Zero Reader) Indicator used on versions of the US Air Force F 86D Sabrejet, F 89 B & C Scorpion, and F 94C Starfire jet fighters. Made by Sperry, part number 673230, with a serial number prefix of AF 51, evidence of a manufacturing year of 1951. According to the F 89 Flight Manual, the flight computer electronically combines attitude, altitude, heading, and radio information to advise the pilot that the aircraft