Sullivan, Christine [Gordon]. [from old catalog] · New York, Cincinnati [etc.] American book company · leaf 42
to another. 4. I7ivisible lines are those which represent invisible edges orprofiles. On working drawings, feet and inches are marked thus : feet, ;inches, . Arrow lines are made in connection with the figures indi-cating proportions or sizes. These lines are called dimension li?ies. Working… … Exercise i. Exercise 2. -^ ^ \ keV < 30 > <l6>> -. ^ / C 0Exercise 3.
Mechanical drawing
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