Crawshaw, Fred D. (Fred Duane), b. 1874, Phillips, J. D. (James David), 1869- joint author · Chicago, New York, Scott, Foresman and company · leaf 234
Fig. 255. Revolved Section Various combinations of lines are used to represent sections ofdifferent materials. No standard section notation has ever beenuniversally adopted. It is customary to add a note giving the … Section A A Section BB Fig. 256, Removed Sections name of the material unless a local section notation is in use.Except for a few cases where it is desirable to distinguish betweenthe metals in adjacent parts, such as the babbit and the castingof a bearing, nothing is gained by using characteristic…
Mechanical drawing
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