Fry, Horace Pugh. [from old catalog] · Philadelphia [The John C. Winston co.] · leaf 17
should not touch the pointsbetween which they are drawn. 10. Adjacent part lines are drawn like construction lines.They are used to show a part that is adjacent to the piece drawn. 14 SHADE LINES. 1. To distinguish readily between depressedand raised portions of an object, and to make the drawings… … Fig. 14. the paper as shown by the arrow^s to the left in Fig. 14. The divi-sion between light and dark surfaces is indicated by a heavy Hneabout three times as thick as the outline. No account is taken ofthe shadows cast by one portion of the object upon another. In many cases the position of…
Mechanical drawing
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