Elementary projection drawing. Theory and practice. For preparatory and higher scientific schools, industrial and normal classes; and the self-instruction of teachers, inventors, draftsmen, and artisans. In six divisions ..
Samuel Edward Warren's textbook of elementary projection drawing, issued by John Wiley & Sons in New York in 1880 for technical schools, normal classes, and self-teaching draftsmen and artisans. The folding plates crowd lettered construction diagrams onto a page: line-ruled prisms and pyramids, ray projections, hatched shadow tones, torn-edge conventions, and a spoked circular chart, useful as technical line ornament.
