Airspeed Indicator, USSR, 0-1,200 km/h Grumman Weston model 425

Weston model 425

and another full rotation to 4000 RPM

25in diameter and 3in deep

There are some markings on the glass denoting the operating limits and orientation of the glass (the white mark

thus corresponding BMEP with BHP and RPM

Airspeed Indicator, USSR, 0-1,200 km/h Grumman Weston model 425This is an exceptional example of a Soviet Airspeed Indicator as used in 1950 70's aircraft the USSR Air Force. There are two pointers, the narrower pointer which indicates airspeed in 10 km h increments rests behind the thick pointer, which indicate airspeed in 100 km h increments, and is not visible in the photo. For example, if the thick pointer was at 80, and the narrow pointer was at 20, the aircraft was traveling at 820 km h. It is in