Further Flight Tests on the Effectiveness of Handley Page Automatic Control Slots
This is a 1932 NASA technical report series item, a technical report on flight tests of Handley Page automatic slots on aircraft wings, held in the NASA Technical Reports Server collection and written for aeronautical engineers. The pictures are dimensioned line drawings: plan and section views of a fuselage-like body with struts, lettered reference points, and a wing with measured chord and span labels in millimetres. A designer could take from them the restrained vocabulary of mid-century engineering diagrams, with thin dashed centrelines, dimension arrows and lettered callouts.
