First principles of mechanical and engineering drawing (1897)
Holt-Butterfill, H · London : Chapman & Hall · leaf 101
as an axis, carrying with it all its points, the position ofwhich with respect to the YP may always be easily determined, andfrom them the projections of the lines in which they lie may be found.41. To find the projections of a compound curved line, or one nopart of which would coincide with or lie… … Fig, 140 MECHANICAL AND ENGINEERING DRAWING 89 Let AB, No. 1 (Fig. 140), be the elevation of such a curved line,and ab, No. 2, another elevation of the same line, at right angles tothe first. It is evident that such a line could not coincide with aplane, yet if the relation of any points in it with…
Mechanical drawing
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