Jamison, Alpha Pierce. [from old catalog] · New York, J. Wiley & sons; · leaf 87
s of the cone (1)to the various elements of the cone as shown in 4. The horizontalprojection of the intersections (3) are obtained by projectingvertically from the points of intersection shown in 4 to the hori-zontal projections of the elements of the cone—the radial lines. 68 MECHANICAL DRAWING.… … tJJ
Mechanical drawing
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