Notes on the N.A.C.A. control force recorder
A 1923 technical report from the National Advisory Committee for Aeronautics, held in the NASA Technical Reports Server, describing an instrument for recording control forces on aircraft. The pictures are plain photographic plates of the recorder's cylindrical housing, mounting base and metal casings, with lettered reference callouts and a trace chart of aileron, elevator and reference lines, useful to a designer wanting utilitarian mechanical drawings with labelled parts and graph-paper style line charts.
