Altimeter, Luftwaffe, Fl.22320, R.Fuess 1938 Hohenmesser Italian The construction is that of

The construction is that of a wood mast encased in thin metal with a cable running internally lengthwise from tip to a junction at the base

This type of communication

this would be regarded as a 'non-sensitive' altimeter

The glass for #1-2 needs cleaning from the inside

as used on the blind flying panel of aircraft of the British Royal Air Force and the Royal Australian Air Force of WWII

Altimeter, Luftwaffe, Fl.22320, R.Fuess 1938 Hohenmesser Italian The construction is that ofGerman (Luftwaffe) Sensitive Altimeter Dated Dec 1938, measuring altitude to 10,000 meters. The two sliding markers along the perimeter of the scale are marked E (for QFE) and F (for QFF). The E marker was set to the desired Decision Altitude or Minimum Descent Altitude, whereby upon decent, if the required visual reference (e. g. runway) is not detected by the pilot, he must initiate a missed approach procedure. The F marker was set to the desired