Airspeed Indicator, 430 Knots, R88-I-335 F-100 The clock appears to be

The clock appears to be new old stock and works

as used by single engine aircraft of the Air Corps US Army

was published by the US Navy in 1944

is illegible on the label

Airspeed Indicator, 430 Knots, R88-I-335 F-100 The clock appears to beHere is an Air Speed Indicator as used in WWII era and post WWII era aircraft of the US Navy such as the F4U Corsair fighter (see illustration of the F4U instrument panel from its flight manual dated 1944 showing its location). On this style of air speed indicator, speed between 0 200 knots is read on the outer pointer arrow clockwise along the outer perimeter scale, from 0 360 degrees. Once past 12 o'clock position, speed is then read from 200 knots