Crawshaw, Fred D. (Fred Duane), b. 1874, Phillips, J. D. (James David), 1869- joint author · Chicago, New York, Scott, Foresman and company · leaf 138
d which is best suited to expose only the parts to be erased.The shield is held in position on the drawing with the thumb and PENCIL MECHANICAL DRAWING 133 first finger of the left hand, while the eraser is applied with theright. Fig. 139 Steps in Making a Mechanical Drawing The Border Rectmigle.… … Fig. 139. Usixg the Eraser and Shield 3. On these lines, and from their intersection, lay off 14 tothe right and 10 downward. 4. Through the points thus found draw the remaining sidesof the border rectangle. The Enclosing Rectangle. In mechanical drawing the viewsare located centrally by…
Mechanical drawing
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