Essentials of drafting; a text and problem book for apprentice, trade and evening technical schools (1918)
Svensen, Carl L. (Carl Lars), 1884- · New York, D. Van Nostrand company · leaf 136
/^/^. ^9/ … Fig. ^92 of intersection in order to be visible must join two visible pointsdetermined as stated. A vertical plane through the edge EFwill intersect the inclined prism in two lines parallel to the inclined 120 ESSENTIALS OF DRAFTING edges as shown. Each of these incHned Unes intersects the edgeEF…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.