The N.A.C.A. Recording Tachometer and Angle of Attack Recorder
A technical report from the National Advisory Committee for Aeronautics, issued by NASA's Technical Reports Server, with its date given as 1923 and no stated readership beyond aeronautical engineers. Its pages are scanned photographs and wiring diagrams of instruments: an angle of attack vane on a mounting arm, an oscillator housing, and cross-section and wiring sketches labelled Fig. 1 to Fig. 4. For a designer, the pictures offer clean, high-contrast engineering diagrams with numbered callouts and leader lines, a useful reference for schematic or instructional graphics.
