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Notes on practical mechanical drawing, written for the use of the students in general engineering drawing in the University of Illinois (1907)

Wilson, Victor Tyson, 1864- [from old catalog] · State College, Pa., The author · leaf 122

An illustration from Notes on practical mechanical drawing, written for the use of the students in general engineering drawing in the University of Illinois, 1907, leaf 122 — d cross one anothera little outside of it. These facts are neglected in any prac-tical drawing of the thread, but should be com.prehended.They are, unfortunately, too often incorrectly shown incareful drawings of the thread in well known text books. The diameter of a screw, as dimensioned, always… … Fig. 3 1

Mechanical drawing

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