Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 162
O Fig. Fig. 287. Fig. 288. Elevation. … Fig. 289. n 146 ORTHOGRAPHIC PROJECTION. minated by a diameter inclined at an angle of 45°, the shade being a graduatedone, as shown in Fig. 288. Fig. 289 is an example of this method. In a second method the elevation is shaded, as in the foregoing, but in theplan the light falls from the lower…
Mechanical drawing
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