Vollständiges Handbuch der Seidenfärberei : theoretisch und insbesondere practisch zum Gebrauch für Färber und Fabrikanten
A German practical manual on silk dyeing by Philipp David, published in Aarau in 1855 for dyers and silk manufacturers. The single plate, labelled Tafel II, is a dense sheet of numbered technical diagrams of dye vats, frames and fittings, drawn in plain line with letter keys and figure numbers. A designer could draw on its orderly grid of small mechanical sections as a source for diagrammatic layouts, technical callouts and labelled schematic framing.
