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 43
pe. Thuswood should, as a rulebe broken off, as Fig.83 shows, so as to con-trast with metal orstone. In Fig. 84 afew characteristicspecimens, showing aformation of breaks,suggestive of the rela-tive shape of the objects, are represented. The consistent follow-ing out of the rule given above,…
Mechanical drawing
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