Crawshaw, Fred D. (Fred Duane), b. 1874, Phillips, J. D. (James David), 1869- joint author · Chicago, New York, Scott, Foresman and company · leaf 98
ere-fore shown in their true length. See page 81 under InclinedSurfaces. As stated in discussing the representation of plane surfaces,a surface viewed edgewise is represented by a line. In the case ORTHOGRAPHIC SKETCHING 93 of a plane surface the line representing the surface is a straightline.… … Fig. 98. Type Problem. Perspective of a Shaft Coupling Circular Edges. 1. A circular edge viewed at right angles to its plane showsas a true circle. Example: E F G H in Fig. 97. 2. A circular edge viewed in the direction of its plane showsas a straight line equal in length to the diameter of the…
Mechanical drawing
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