Babbit, Arthur B · New York, H. Holt and company · leaf 100
No. 5. /\fo. G. Plate 7. Extra Plate EXTRA PLATE Draw one of the figures shown on page 89. Allthe lines radiating from the centers C may be ob-tained by using the triangles on the T square, eithersingly or in combination. Work carefully andaccurately. Do not put the dimensions on thedrawing. INKING… … Plate 7. Extra Plate CHAPTER X CYLINDRICAL WORKPLATES 9 AND 10 Whenever a circular piece or circular hole is shownin a mechanical dravdng, a line is used to indicate thelocation of the center of the piece or hole. This lineis known as a center line, and is included in tiie groupof secondary lines…
Mechanical drawing
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