Crawshaw, Fred D. (Fred Duane), b. 1874, Phillips, J. D. (James David), 1869- joint author · Chicago, New York, Scott, Foresman and company · leaf 124
dto extremes of temperature or moisture. PENCIL MECHANICAL DEAWING 119 Drawing Paper. ¥ov mechanical drawing, where a sharp,fine line is to be produced with a hard pencil, a tough, hard papershould be used. It should stand considerable erasing withoutinjury to the surface. It should not become…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
