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 138
to the hehxmaintain the same relation to the developed hehx, and appear in their tme length on the development.The student can make a model of one nappe of this surface by wrapping a sheet of Bristolboard, shaped like Fig. 273, upon a. cylinder of radius r in the equation r sece = p; or a… … THE INTERSECTION OF SURFACES. 421. When plane-sided surfaces intersect, their outhne of interpenetration is necessarily composed ofstraight hnes; but these not being, in general, in one plane, form what is called a tioisted or toarpedpolygon; also called a gauche polygon. 422. If either of two…
Mechanical drawing · Lettering
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