Electrical Thermometers for Aircraft
A 1937 NACA report from the National Advisory Committee for Aeronautics, issued through NASA's Technical Reports Server, documenting electrical thermometer instruments for aircraft engineers and designers. Its plates show the instruments in close photographs: dial indicators with needles and scales, a sealed probe, and a portable test set with meter and connection terminals, along with wiring diagrams in one plate. A designer could draw on the clean, purely functional instrument-panel layouts, the crisp dial faces, and the engineering line drawings for technical graphics.
