Mechanical drawing : a manual for teachers and students (1902)
Cross, Anson Kent · Boston : Ginn & Co. · leaf 128
6. All the above drawings may be made most advantageously by carryingall the views of each object along at the same time, as explained in Art. 36.It is, however, not necessary or important that young pupils should work inthis way. With them the question is not speed, but accuracy and under-standing… … c;^^^%^,^<:%:^^%;%%^%;%%^ SECTION AT A B
Mechanical drawing
Internet Archive · Boston Public Library · Public Domain Mark 1.0. Free to use for anything.
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