Airspeed / Mach Speed Indicator, US Air Force Type ME-4 F-101 Voodoo The switch rotates to each

The switch rotates to each position on the dial

the aircraft is at its maximum allowable airspeed or maximum allowable mach speed

local pick-up is available in the San Francisco Bay Area

The serial # prefix starts with AF-43

“Radio Set AN/ APN-2 is an airborne radar interrogator / responder of the "Rebecca" type that will enable an aircraft to home on ground radar beacons of the "Eureka" type such as AN/PPN-1 and AN/PPN-2 and the heavier beacons

Airspeed / Mach Speed Indicator, US Air Force Type ME-4 F-101 Voodoo The switch rotates to eachThis is a Type ME 4 Air Speed Mach Speed Indicator with Maximum Allowable Indicator as used in the Cold War and Viet Nam War era's US Air Force Fighters F 100 Super Sabre and the F101 Voodoo. See images from their flight manuals. The indicator displayed airspeed from 60 850 knots, and mach speed from 0. 5 to 2. 2 mach. The knob, when rotated, adjusted the air speed index pointer along the perimeter of the airspeed scale. The red maximum airspeed