Relative Worth of Improvements of Fabrics
A 1917 technical report from the NASA Technical Reports Server, a government aeronautical study of how different aircraft fabrics perform. It was written for engineers testing wing coverings and their strength. The four pictures are photographic plates of fabric weaves, each with a bright slit-shaped opening, labelled by material such as cotton, doped cotton, and linen. A designer might take from them the dense, streaked texture of woven cloth photographed under raking light, with a single glowing aperture as focal point.
