Mechanical drawing for industrial and high schools (1915)
Leeds, Charles Carley, 1870- · New York, D. Van Nostrand company · leaf 68
Ellipse … class Industrial name John W. Roberts date Mar.28-07. The Carnegie Institute or TechnologyPittsburgh , pa. Conic Sections scale Full Size DWG NO. C.I028 LESSON No. 31. ISOMETRIC PROJECTION.—It is frequently necessary forthe mechanical draftsman to make one-plane projection drawingsof certain forms…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
