Luftwaffe Dreieckrechner DR 2 Flight Computer Fl.23825 1938 AR-234 Liquidometer PN EA41A-3 and Stock

Liquidometer PN EA41A-3 and Stock #R88-I-2044

It has a date stamp of Jun 23

Under icing conditions

The oil temperature was measured via electrical resistance thermometer bulb

Luftwaffe Dreieckrechner DR 2 Flight Computer Fl.23825 1938 AR-234 Liquidometer PN EA41A-3 and StockThis 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.