United States. National Advisory Committee for Aeronautics, United States. National Aeronautics and Space Administration · Washington : G.P.O. · leaf 664
0 Fig. 1.—The Vane and Air Speed Meter, … Fig. 2.—Photographs of Vane and Air Speed IVIeter taken withGem Camera.
Aeronautics
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
