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 .. (1880)
Warren, S. Edward (Samuel Edward), 1831-1909 · New York, J. Wiley & sons · leaf 80
e built of broken rock. Each should show the broad-est surfaces in plan. c. After tinting, add pen-strokes, called hatchings, to repre-sent the character of the surface; as in Fig. A., for rough, or un-dressed stone; in waving rows from left to right of short, fine,equal, vertical strokes, for…
Geometrical drawing · Mechanical drawing
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