Airspeed Indicator, 900 km/h, Luftwaffe Fahrtmesser Fl.22234

Here is a WW2-era German Airspeed Indicator FI.22234, with a maximum airspeed of ~900 km/h.  As the airspeed increases, rotating the pointer clockwise from the 6 o'clock position, it rotates 360deg past 0 once 800 km/h is exceeded, thus following the airspeed index on the inner scale, up to ~900 km/h.  Alternative markings have been added by hand in red on the exterior glass.  According to AircraftCockpits.com, this was used in aircraft such as Do335, Fi103, FW190A7-9, Ta152, Go229, He162, He219, Ju388, Bf109G, Fi103, and Ta152 H-0.