The technic of mechanical drafting a practical guide to neat, correct, and legible drawing (1904)
Reinhardt, Chas. William (Charles William), b. 1858 · New York, The Engineering News Pub. Co. · leaf 19
te side so treated. At the same time, as the readerwill perceive, something seems to be amiss with that shading. Letus therefore deviate just a trifle from the oithodox rule and applythe remedy : Add one-half or one-third the regular width of a shadeline to the lower left hand outline of the square… … The shading of circles is generally effected by shifting centers or moving the points of the compasses a trifle from the center of such figure, the distance being equal to the thickness of the desired shade line, and inking in the shading always in a direction from left to right. If the new center…
Mechanical drawing
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