Fl. Nr. 23825. Manufactured by Denner & Pape of Hamburg. DR 2 dead reckoning 'triangle' computers were commonly referred to by pilots as a Knemeyer. 15cm diameter in size with a rotating inner ring and perspex 'pointer' arms. 1942 dated. Shows wear and use with some discolouration and knocks. Some of the screws are missing (later examples were riveted) and the pointers/discs are a little stiff to move/rotate. Reasonable condition. Priced accordingly. Stock code M20171.