Melliand's Textilberichte
Melliand's Textilberichte is a German trade periodical on the textile industry, published in Mannheim by its own press in 1923 for textile manufacturers and technicians. Its pictures are black-and-white technical drawings: force and roller diagrams, a geometric construction of a curve with tangent lines, a pair of machine elevations with cylinders and drive wheels, and a velocity vector diagram over concentric circles. A designer could draw on their clean line work, labelled schematics and mechanical precision for diagrammatic graphics.
