Babbit, Arthur B · New York, H. Holt and company · leaf 189
perpendicular dis-tance between the planes of its bases. Fig. 96 Cones A conical surface is a curved surface generated by amoving straight line one point of which is fixed whilethe line is made to follow a given curve. In Fig. 97, 178 MECHANICAL DRAWING the line A B in its several positions passes… … Fig. 97
Mechanical drawing
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