A textbook on mechanical and electrical engineering (1902)
International Correspondence Schools · Scranton : International Textbook Co. · leaf 344
kind of a broken-and-double-dotted line used for the center line and the axial line. Theuse of this line for these three purposes is somewhat puzzlingto the beginner; but as the student is now able to read pro-jection drawings, he can readily determine which purposethe line is intended to serve. It… … Fig. 32 at each end of the line, to which reference is made in thefollowing manner: If, in the view where the cutting planeappears as a line, it is lettered A-B, the full view of thesection is designated as a section on the line A-B. 80. The problems for this plate, of which there arefour, consist…
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