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Indoor flight models are quite astonishing. An interesting event was held today in the Deutschlandhalle in Berlin, the qualifying flight for indoor flight models, which the Group IV Berlin-Brandenburg of the NSFK had organized for the national competition taking place on November 30, 1940 in Breslau. U.B. shows a helicopter with a paper tube fuselage and microfilm covering, which achieves a climb height of about 20 meters. Press photo, approx. 5" X 7" in size.