Wallis, Rolland S. [from old catalog], Iowa state college of agriculture and mechanic arts, Ames. Dept. of engineering extension. [from old catalog] · Ames, Iowa, Engineering extension department, Iowa state college · leaf 50
rawing were drawn exactlyalike, the drawing would not beeasy to read. For this reasonthe lines used are varied in ap-pearance so that they may berecognized readily. This maybe done by varying the weightof the lines or by breaking theminto various combinations oflong and short dashes. The… … Fig. 65.—An assembled drawing.
Mechanical drawing
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