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,artizans, etc. ... In five divisions .. (1867)
Warren, S. Edward (Samuel Edward), 1831-1909 · New York : J. Wiley and son · leaf 86
(Prin. 3°), in the perpen-dicular, bb, to the ground line at b. That is, b is the intersectionof bb with ab. The student, in advancing through the following problems, willnow be pi-epared to note the point b, PI. VIII., Fig. 83; the point5, Fig. 84 ; the point d, Fig. 85, and the points p and g^… … Fis. 5.
Geometrical drawing · Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
