Selector Switch, Zero Reader, US Air Force C-7 It is in nice condition

It is in nice condition for its age

See image of a A-7E instrument panel showing the location of this instrument

Weston model 1534

for taking bearings on objects

Selector Switch, Zero Reader, US Air Force C-7 It is in nice conditionThe Zero Reader Selector Switch, made by Sperry part number 668899, was a component of the Zero Reader Flight Computer. The Zero Reader was used in a number of Cold War era aircraft of the US Air Force, such as the F 89 Scorpion and F 94 Starfire jet fighters interceptors (see photos from F 89 flight manual showing the location of this instrument). According to the F 94 Starfire Flight Manual: The Zero Reader is an automatic flight instrument that