Unterricht zur praktischen Rechenkunst zu geometrischen, perspectivischen, und optischen Zeichnungen und Berechnungen nützlich für Anfänger und Liebhaber dieser Wissenschaften ehemals durch Schübler und Rost verfasset
A late eighteenth-century German instruction book on practical arithmetic for geometric, perspective and optical drawings, compiled from earlier work by Schübler and Rost and issued in 1785 for beginners and amateurs of these sciences. Its plates are engraved diagrams: perspective constructions of arches and rooms, grids, polyhedra and protractor-style measuring tools, which a designer could draw on for precise technical linework, geometric ornament, or diagram layouts.
