Babbit, Arthur B · New York, H. Holt and company · leaf 43
their true length in the drawing,while all lines back of the picture plane will be short-ened. This foreshortening of lines with the in-ability to measure them, makes the perspectivedrawing of very little value to the workman. In making the working drawing or mechanicaldrawing, we consider that all… … Fij. 15 WORKING DRAWINGS 33 lustrated the two principles by which the perspectivedrawing and the working drawing views are ob-tained. Note that in Fig. 14 none of the Hnes areseen on the picture plane in their true length, beingforeshortened because of the converging lines ofsight, while in Fig. 15…
Mechanical drawing
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