Crawshaw, Fred D. (Fred Duane), b. 1874, Phillips, J. D. (James David), 1869- joint author · Chicago, New York, Scott, Foresman and company · leaf 229
projecting from a to the base circle ofthe cone in the top view to determine the foot of the element a bin the top view, and connecting this point with the apex. Elements should now be drawn in the surface of the cylinderto pass through the points in which the elements of the cone strikethe surface… … PH The surface of the cylinder may now be developed followingthe usual method. Attention is again called to the fact that theelements of the cylindrical surface are not equally spaced. It ADVANCED DRAWING 225 will therefore be necessary to step off each division separately,taking care to place them…
Mechanical drawing
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