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 132
b, we draw, the rayin the direction b—a; then project a at a, &c. Remark.—The student may profitably exercise himself in chang-ing the positions of the given parts, while retaining the methodsof solution now given. For example, let the parts of the last problem be placed sideby side, as two… … lit * 1:1 i W 1 I oi/ijl ^^ ^Hr—^—f—^ PL. IX
Geometrical drawing · Mechanical drawing
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