Airspeed Instrument, Soviet/Russian, Unknown function, Cold War-era F-94 the faceplate rotates to indicate

the faceplate rotates to indicate the selected frequency within the small metal frame (to which a small lamp could be affixed for illumination)

Bearing Distance Heading

It is in excellent condition given its age

such as medium bombers B-25 Mitchell

Airspeed Instrument, Soviet/Russian, Unknown function, Cold War-era F-94 the faceplate rotates to indicateThis Soviet Russian aircraft instrument appears to be for setting an airspeed between 70 220 kilometers per hour. The center knob turns and rotates the only pointer around the dial. The seemingly pitotstatic pneumatic connections in the back are protected by a beige tube for storage (I'm assuming), and an electrical connector exits the back case. It may be some sort of a stall warning instrument, whereby the pilot could set an airspeed below which a