The Parnall "Imp": A New British Light Airplane
This is a 1928 NACA aircraft circular, issued by the National Advisory Committee for Aeronautics, describing the Parnall Imp, a British light biplane, for aviation engineers and researchers. The single picture is a set of technical drawings with three-view plans, front and side elevations, and a labelled dimension and area table, useful to a designer wanting a clean engineering diagram layout with annotation keys and measurement callouts.
