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 14
En (3 News.> Fig. 10. as a close study of the illustration will show. … transparent ma- oniM?anKterial. A good exam-ple of invisibleand alternat-ive lines con-trasted is givenunder Fig. 10, adrawing of a fold-ing ear-step; thelatter kind oflines indicatesgraphically theparts folded up, 11 In finishing a drawing first of all should be drawn in the curvesthat are to be…
Mechanical drawing
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