Dual Boost/Manifold Pressure Gauge Ladedruckmesser Fl20556 Liaison Aircraft The indicator itself is in

The indicator itself is in very good cosmetic condition but its operational condition cannot be verified without test equipment

FL dated 1950

Oil Pressure

A-35 Vengeance

The H-4 was equipped with a boom mounted microphone M-6A/UR to be used below 10

Dual Boost/Manifold Pressure Gauge Ladedruckmesser Fl20556 Liaison Aircraft The indicator itself is inThis is an authentic WWII era German Ladedruckmesser Fl20556, or Dual Boost Manifold Pressure Gauge as used in twin engine aircraft of the Luftwaffe such as the Heinkel He 219 Uhu night fighter, the Dornier Do 335 V Pfeil fighter, and Siebel Si 204 D transport. The instrument has two pointers: the pointer with the "R" is for the "Recht" or right engine, with the unmarked pointer for the left engine. It has a pressure range of 0. 6 to 1. 8 ata (bar).