The electrodynamometric balance of the small wind tunnel of the French Service of Aeronautical Research
A 1930 NACA technical memorandum from the NASA Technical Reports Server, reproducing plates on the electrodynamometric balance of the small wind tunnel of the French aeronautical research service, written for aeronautical engineers and researchers. The plates show the tunnel's wind-load measuring apparatus. Designers might take from them the dense, schematic look of mid-century engineering documentation: grey gelatin-toned photographs of machinery, line drawings with scale bars, and a wiring diagram with clean labelled lines.
