Jamison, Alpha Pierce. [from old catalog] · New York, J. Wiley & sons; · leaf 34
Fig. 9 c „- Fig. 10 Lines of Uniform Weight. Shade Lined* A Mechanical Drawing of a Ring. surfaces from which the light is excluded—a process which issometimes called back-lining. (See Figs. 7, 8, 9, and 10.) It is obvious that the right-hand and bottom lines, for draw-ings representing solid…
Mechanical drawing
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