Crawshaw, Fred D. (Fred Duane), b. 1874, Phillips, J. D. (James David), 1869- joint author · Chicago, New York, Scott, Foresman and company · leaf 233
drawing the section view, the cut surface 0 A is con-sidered revolved into the same plane with 0 B. Fig. 254 illus-trates what is called a partial section. The ragged line indicatesthat a part of the shaft has been broken away. The cross-section of an object is often given by showing a 228… … Section on AOB Fig. 253. Broken Line Section
Mechanical drawing
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