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The Motorenanwärmer fahrbar (auch für Zeltbeheizung) Vielbrennergerät - engine pre-heater movable (also for tent heating) multi-burner-device - of the old design was used for the pre-heating of aircraft engines, for the thawing of the wing assembly and for the heating of tents. (Image from D.(Luft)T. 8800/2)
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