Control Unit, Bendix MN-52H, for MN-20E Radio Loop Antenna, RA-10 Receiver H-21 It is in exceptional condition

It is in exceptional condition given its age and appears to be new old stock

measuring airspeed from 50-400 kilometers/hour (~30-250 MPH)

It includes a metal ring at the top for affixing a wire command set antenna which ran to the top of the tail

As that screw is turned the striped maximum airspeed pointer moves along its prescribed range

which is concealed beneath a cover screw on the back left side

Control Unit, Bendix MN-52H, for MN-20E Radio Loop Antenna, RA-10 Receiver H-21 It is in exceptional conditionThis WWII era MN 52H Control Unit, made by Bendix, for the MN 20 or MN 24 rotatable loop antenna, combining directional finding and general radio signal receiving, for the Bendix MN 10 Direction Finding System and RA 10 Radio Receivers as used in some bomber and transport aircraft of the US Army Air Force and US Navy. The azimuth control knob turns and rotates the pointer. The light switch toggles, and the Mazda 323 3V bulb is present. The plastic