Avro C.30 Direct-Control Autogiro (British)
This is an aircraft circular from 1934, issued through the NASA Technical Reports Server, documenting the Avro C.30 direct-control autogiro, a British rotorcraft. The pictures are black-and-white photographs and technical line drawings of the machine's rotor head, fuselage frame, and wide landing gear, with numbered figure captions. A designer could take from them the clean, schematic way engineering drawings label parts with leader lines and figure numbers.
