Mechanical drawing : a manual for teachers and students (1902)
Cross, Anson Kent · Boston : Ginn & Co. · leaf 80
72 MECHANICAL DRAWING. When the planes of projection are revolved into the plane of thefront plane, these horizontal lines form one straight line whichpasses through A^ and contains the different vertical views of A.The projecting lines from A Xo the front, back, top, and bottomplanes are in a…
Mechanical drawing
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