Flight Computer Indicator Type A-1 & A-2 and Zero Reader Lancaster to indicate the gross flow

to indicate the gross flow (not the precise rate) of oxygen from the primary oxygen tanks (not portables) to the local junction at each station

along with the symbols of the Soviet army and the manufacturer

It is packaged in its original carton

The mach number limit is adjusted for the specific aircraft model by turning the inset screw on the rear case prior to installation

Flight Computer Indicator Type A-1 & A-2 and Zero Reader Lancaster to indicate the gross flowThis 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