Experimental Investigation of the Robinson-Type Cup Anemometer
This is a 1936 technical report from the National Advisory Committee for Aeronautics, published in the United States for engineers and aerodynamics researchers, documenting experimental tests of a Robinson-type cup anemometer. The single picture is a page-sized line graph plotting lift and drag coefficients against angle of attack in degrees, with several curves crossing a fine square grid. A designer could take its restrained scientific chart style: thin black curves, dense gridlines, small italic labels and a plain serif caption beneath.
