Aerodynamic Laboratory at Cuatro Vientos
This is a page from NACA Technical Memorandum 414, a 1927 government aeronautics report issued by the National Advisory Committee for Aeronautics for engineers and researchers, documenting the aerodynamic laboratory at Cuatro Vientos near Madrid. The pictures are plain black-and-white photographs and line diagrams of wind tunnel models, a propeller-balancing rig, and a torque meter, showing dense technical apparatus with practical framing and labels that a designer could use for industrial, mechanical, or retro scientific visual themes.
