For applications with highest demands on pressure measurement like vehicles with pneumatic brakes we have especially developed pressure gauges with combined unit system (consisting of measurement system, movement and dial). Although hey have been designed especially for railway vehicles, they can also be used in buses or trucks. A good resistance against environmental influences is achieved by using stainless steel for the housing. A very good long term stability even at high load cycle conditions is obtained by using a special copper alloy for the measurement system. All versions have dials that are lit glare-free by a special light conductor. The dial is illuminated either indirectly via slots in the housing or directly via bulb or LED in socket BA9s. Illuminating foils, stimulated by a converter, are available for special applications. Easy installation in any application is provided by the special design of measuring system, dial and movement as a combined unit system.