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
Fig. 65.—An assembled drawing. … Border line - Heavy full line (32to fa)Visible Outline-Medium full line (^gfog,)Hidden Outline-Medium dash line.Center line - Thin dot and dash line (j&toJh)Extension line - Thin long dashes.Dimension line - Thin full line- •l^* s-Solid head- convenient to make with^— bail-pointed pens.…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
