Fabrics for aeronautic construction
A 1918 aeronautic technical report from the NASA Technical Reports Server, collecting laboratory test records of fabrics for aircraft construction. The two pictures are load-stretch diagrams plotted on a grid of hatched triangular fields, each with a lab number, date, fabric condition and sample dimensions printed beneath. A designer could take from them the restrained, diagrammatic look of engineering test charts, with crisp diagonal lines over dense fine-line hatching and small caption type set in a plain block.
