Crawshaw, Fred D. (Fred Duane), b. 1874, Phillips, J. D. (James David), 1869- joint author · Chicago, New York, Scott, Foresman and company · leaf 54
a single ellipse. PERSPECTIVE SKETCHING 49 Fig. 41 shows two concentric ellipses inscribed in concentricsquares shown in perspective. The ellipses therefore representcircles. On account of foreshortening, the axes of the ellipses donot coincide with the line representing the diameter of the… … Fig. 43. Split Core Bos—Axis Horizontal slightly in front of the major axis of the smaller ellipse, mustbe used. In Figs. 42 and 43 the major axis C F is laid off equal to thediameter of the circle, as in the case of the ellipse representinga one-inch circle. Fig. 38. A one-inch ellipse should be…
Mechanical drawing
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