Fabric analysis; covering wool, worsted, silk, cotton, artificial silk, etc. from fiber to finished fabric
A 1920 Philadelphia textile manual by E. A. Posselt, written for textile technicians and mill workers, tracing fabrics from raw fiber to finished cloth. The four pictures are line engravings of mechanical apparatus: a loom-like drive with a large flywheel and belt, a graduated arc instrument on a stand, a pulley and weight testing rig, and a tripod-based stand with clamps and rods. A designer could take their precise, schematic line style and the crisp diagrammatic labelling as a model for technical illustration.
