Operating equipment for U.S. Army observation balloons : Tension meters, maneuvering blocks, maneuvering spiders, danger cones and clamps, valve testing device, sand bags.

Bibliographic Details
Corporate Author:	United States. Army. Air Corps
Format:	Government Document eBook
Language:	English
Published:	Washington : U.S. GPO, 1920.
Series:	War Dept. Doc. No. 1045
Subjects:	United States. > Army. > Air Corps. Airplanes, Military. Balloons. Specifications. Electronic books.
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