Airspeed Indicator, 550 km/h, Luftwaffe Fahrtmesser Fl.22230 WW1 The loop itself is 9

The loop itself is 9 inches diameter

and is the repair activity on the F-I06 fighter-interceptor

AC US ARMY is embossed on its face

It may subsequently take a long time to re-align if left by itself—several hours for 180 deg

PN 549N-06

Airspeed Indicator, 550 km/h, Luftwaffe Fahrtmesser Fl.22230 WW1 The loop itself is 9Here is a WW2 era German Airspeed Indicator FI. 22230, with airspeed indication from 60 550 km h, made by Original Bruhn, Berlin, of the Velocom design. It has a manufacturing date of Oct 1941. According to AircraftCockpits. com, this was used in WWII era Luftwaffe aircraft Ar79, Ju52, Bf108D, Bu181, He111, and Do24.