Mechanical drawing : a manual for teachers and students (1902)
Cross, Anson Kent · Boston : Ginn & Co. · leaf 138
2 … I30 MECHANICAL DRAWING. PLATE X. Fig. 90. (y^) Front and top views of a vertical circular card, par-allel to the front plane. (B) The same views of the same card when perpendicular to the toppla7te and at a7i angle of 4S° with the front plane. The views of the first position are necessary to obtain…
Mechanical drawing
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