Standards and conventions for mechanical drawing (1921)
Kepler, Frank Roy, 1875-, Detroit (Mich.). Board of Education · [Detroit] · leaf 30
^OR/LL cSfNH ^ BRIGGS STD.PIPE THD. FIG, 3 … F/G.^ PLATE 14 29 66. Never section bolts, nuts, screws, shafts, spindles, keys,arms of wheels (lengthwise), gear-teeth, etc. Plate 11, Fig. 2,Plate 12, Fig. 1. 67. Seldom show hidden edges behind the line of section,unless clearness positively demands it. It is better to makeanother section view.…
Mechanical drawing
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