Der Ingenieur : Sammlung von Tafeln, Formeln und Regeln der Arithmetik, Geometrie und Mechanik : für praktische Geometer, Mechaniker, Baumeister und Techniker überhaupt
Der Ingenieur, a German engineering reference compiled by Julius Weisbach and published by Vieweg und Sohn in Braunschweig in 1848, gathering tables, formulas and rules of arithmetic, geometry and mechanics for practical surveyors, mechanics, builders and technicians. The pictures are plain black-and-white line diagrams of three-dimensional coordinate axes, labelled points and planes, and geometric solids, with a clear pedagogical structure that a designer could draw on for technical schematic or diagrammatic motifs.
