Airspeed Indicator 320 MPH Mk IXD Ref 6A/415 RAF B-17 controller

controller

Power Plant

for example by change of wind direction or surprise enemy action

The lettering is precise

indicating manufacturing year of 1942

Airspeed Indicator 320 MPH Mk IXD Ref 6A/415 RAF B-17 controllerThis is an excellent example of a WWII era Air Speed Indicator Mark IXD, Ref 6A 415, as used in the British RAF Fairey Battle bomber and the Airspeed Oxford utility aircraft. This particular specimen has a serial number showing a year of manufacture of 1939. Air speed from 0 200 MPH is indicated by a clockwise rotating pointer, starting at the 6 o'clock position, along the outer perimeter scale. As the aircraft passes 200 MPH, air speed is indicated