Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 146
■A~- FiG. 265. fusion of lines) let 5 ^ be trans-ferred to a h\ which will repre-sent, as before, the extreme limitsof the curve required; take anypoint, as rZ, in this new positionof the cutting plane, it will berepresented by cP^ and, if the cut-ting plane were turned upon a V(Fig. 263) as an…
Mechanical drawing
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