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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 156

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 156 — . Some drafting rooms use a solid line, butmuch lighter than any of the other lines of the dravvi ^ -din rendering in ink where blue prints are to be tnn .^ Working Drawings 147 it, they are made in red ink with a Httle black mixed with itto render it opaque, and make it show on the bhie print as…

Mechanical drawing

Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.

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