The Handley Page type 42 commercial airplane (British) : a metal sesquiplane
A 1930 NACA Aircraft Circular from the NASA Technical Reports Server, a technical report on the Handley Page Type 42 British commercial airliner, a metal sesquiplane, written for aeronautical engineers and designers. Its pages show photographs and line drawings of wing struts, fuselage tube joints and metal framing. A designer could draw on its precise, diagrammatic engineering views of stripped-down aircraft structure, with labelled detail callouts and numbered construction steps.
