Selector Switch, Zero Reader, US Air Force C-7 with two clamping screws

with two clamping screws

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

The Zero Reader Heading Selector

A very cool item to add to your collection

Weston model 1534

Selector Switch, Zero Reader, US Air Force C-7 with two clamping screwsThe 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