Principj di architettura civile
Francesco Milizia's Principj di architettura civile, an Italian treatise on the principles of civil architecture printed at Finale in 1781 for architects and students. The plates are engraved geometric diagrams: roof trusses, arches and semicircular arcs drawn in fine line with dashed construction lines and lettered points, useful as technical line ornament, diagram borrowings, or lettered-figure motifs.
