Gyroscopic Instruments for Instrument Flying
This is a 1938 NACA Technical Note, issued by the National Advisory Committee for Aeronautics and distributed through NASA's Technical Reports Server, that documents gyroscopic flight instruments for flying without outside visual reference. Its engineering diagrams show gyro gimbals, cutaway housings, and labelled sections of direction indicators and artificial horizons, which a designer could use for mechanical line drawings, exploded views, and technical schematics with precise lettered callouts.
