Wind Tunnel of Zeppelin Airship Company
A 1923 technical report from the NASA Technical Reports Server, issued for engineers and aerodynamics researchers, describing the wind tunnel of the Zeppelin airship company. The pictures are plain line drawings with lettered dimension callouts: a sectional plan and elevation of the tunnel and its balance, and a sketch of a rigged test frame with pulleys and a suspended weight. A designer could take their clean, measured diagram style, with dimension arrows and labelled parts, as a model for technical schematics.
