Practical engineering drawing and third angle projection, for students in scientific, technical and manual training schools and for ... draughtsmen .. (1897)
Willson, Frederick Newton, 1855-1939 · Princeton, N.J., The author · leaf 153
planeab at X. Project up from X, get-ting yz for the plan of the intersectionof the two bases. We may assume any number ofauxiliary planes, some at random, butothers more definitely, as those throughedges of the pyramid or tangent to thecone. Taking first one through anedge, as or, we have trz for… … INTERSECTIONS,—PRACTICAL ENGINEERING DESIGNS. 173 The plane s y, tangent to the cone along the element u v, has the trace //1 on the base of thepjTamid, and cuts lines jo and I-o from its faces. These meet i-«. at two more points of the curve,their elevations being found by projecting j to j and k…
Mechanical drawing · Lettering
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