Della geometria e prospettiva pratica
Della geometria e prospettiva pratica is a Roman treatise on practical geometry and perspective, published in 1771 by Benedetto Franzesi and written by Baldassarre Orsini (1732-1810). The pictures are numbered plates of engraved geometric diagrams: plane figures, solids, and sectioned shapes labelled with letters and drawn in fine line. A designer could draw on their clean construction logic, with planes, cylinders, cones, and vaulted arches shown as simple wireframe outlines.
