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 150
cir-cles. Let Fig. 7 be the cabinet projection of a cube, with circlesinscribed in its three visible faces. One of these circles, abed, willappear as a circle, and so would the invisible one on the parallelrear face. For the ellipse in BCDG, draw the diagonals, BD and CG, of CABINET PROJECTIONS. 99… … Fig. 1. and A, by their intersections with the diagonals BD and CG. Themiddle points of the sides of the face BCDG, are also points of theellipse, and are its points of contact with those sides. The ellipsealso has tangents at h andjf, parallel to BD, and at u and p, paral-lel to CG. Hence, having…
Geometrical drawing · Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
