Improved Apparatus for the Measurement of Fluctuations of Air Speed in Turbulent Flow
A 1934 NASA technical report on improved apparatus for measuring fluctuations of air speed in turbulent flow, illustrated with laboratory photographs of electronic instruments and one performance graph. The pictures show racks of audio oscillators, amplifiers and meters on a bench, plus a plot of relative output against frequency comparing compensated and uncompensated responses. A designer might take from them the dense, utilitarian look of mid-century scientific instrument panels, with dials, knobs and labelled gauges in grey tones.
