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 41
some remarkable jiroperties, chief among which is the fact that it is the only surface of revokition known from which circles can be cut by three different systems of planes.* ng-. 7-4. E^igr- vs. Fitr X, / TORUS \ / C/ la y \D … ip If 113. In Fig. 74 the same surface is shown, in the centre, in outhne only. The axis of thesurface would be a perpendicular to the paper at A. If MN represents a plane peirpendicular tothe paper and containing the axis, then Fig. X will show the shape of the cut or section. As M Nwas but one of…
Mechanical drawing · Lettering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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