A manual of elementary geometrical drawing, involving three dimensions. Designed for use in high schools, academies, engineering schools, etc.: and for the self-instruction of inventors, artisans, etc. ... In five divisions .. (1868)
Warren, S. Edward (Samuel Edward), 1831-1909 · New York : J. Wiley & son · leaf 88
Fig. 5. … Fig. 6. pierces the vertical plane ; b being the intersection of bb\ a per-pendicular to the ground line from b, where the horizontal projec-tion ab intersects it; and ab, the vertical projection of the givenline. And the point b, Fig. 81 ; the points b and d, Fig. 82 ; thepoint O, Fig. 86; the…
Geometrical drawing · Mechanical drawing
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
