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 149
WOODEX STBUCTURES. 113 10. This flat topped tower also casts a shadow on the side of theroofed tower. The right back corner, H—I, of the top, casts theshadow hh on the side of the roofed tower, through Avhich theshadow line, hx is drawn, parallel to the line H—Hl which castsit. The right hand top…
Geometrical drawing · Mechanical drawing
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.