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 246
nd earth is shown only ateach side of it. The usual conventional rule is, to fill the sectional elevation of aatone wall with wavy lines; bu;Uvhere other marks serve to distin-guish elevations from sections., as in the case just described, thislabor is unnecessary. The following would be the…
Geometrical drawing · Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
