Luftwaffe Air Speed Indicator (Fahrtmesser) as used in early 'Messerschmitt Bf 109', Bf 110, Junkers Ju 87, Ju 88, Dornier Do 217 and other models. It is having a measuring range of 80 - 750 km/h. The reverse has both hose plugs still present, which are marked 'Stat.Druck', for Statischem Druck (static pressure), and 'Meßdruck' (Measuring Pressure). The speed indicator is nicely maker marked by 'Original-Bruhn' and marked with the Luftwaffe Contract Number 'Fl22231', dated 28 January 1937. Decorative original item!