Sullivan, Christine [Gordon]. [from old catalog] · New York, Cincinnati [etc.] American book company · leaf 44
Illustrate. GEOMETRIC SOLIDS, — PLANS AND ELEVATIONS, 39 LESSON XVII. GEOMETRIC SOLIDS. —PLANS AND ELEVATIONS. All objects have three dimensions,—length, breadth, and thickness. Perspective is the art of representing them as they appear. Projection is the representation as they exist or really are.… … Fig. 6o. by machinists, architects, builders, and inventors. In making pro-jections, the outlines of the object and its parts are supposed to beprojected, or thrown on a vertical and on a horizontal plane. Theseplanes or surfaces are at right angles to each other, like the floorand the wall of a…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
