Prob. 32. To make the isometrical drawing of theskeleton frame of a box made in the form of the frustum of asquare pyramid. Fig. 72. Let a square prism be circumscribed about the frustum.The isometric of this prism is readily drawn, and is shown bythe dotted lines. The bottom edge of the frustum… … )l. ISOMETEICAL DRAWING. 117 completed. The other lines which change the frustum from asolid to a skeleton need no explanation. 125. Pkob. 33. To make an exact isometrical drawing ofa circular card, and also of any scroll or letter on its surface.Fig. 74. Let the circle and letter G be given as in…
Mechanical drawing
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