Luftwaffe Dreieckrechner DR 2 Flight Computer Fl.23825 1942 Short Stirling The periscope of the sextant

The periscope of the sextant would be inserted through a shutter mount in the top of the cabin to obtain a reading

or it can release (salvo) both racks simultaneously by shifting the lever to the center position and pulling back

dated Nov 1948

indicating where this module would be installed

A box containing magnets which may be turned to compensate for deviation is located on the bottom of the compass

Luftwaffe Dreieckrechner DR 2 Flight Computer Fl.23825 1942 Short Stirling The periscope of the sextantThis is an authentic Dreieckrechner Flight Computer, Model DR2, Fl. 23825 as used by pilots and navigators of the German Luftwaffe during WWII. It is essentially a two sided slide rule. Side one is used to correct the course of flight due to wind direction: by setting the black arrow to the desired course and rotating the white inner dial to the wind direction in black, then correcting the course by turning the aircraft to the corresponding red angle.