Crawshaw, Fred D. (Fred Duane), b. 1874, Phillips, J. D. (James David), 1869- joint author · Chicago, New York, Scott, Foresman and company · leaf 154
Fig. 155. Type Problem. Constructive Stage of Mechanical Dravping … 150 MECHANICAL DRAWING 157, estimating A C as nearly as possible equal to the radius ofthe arc. Set the needle point at B opposite A and bring the leadaround to D. Move the needle point parallel to A C an amountequal to the error. The compass should then be again rotatedback to A to test for…
Mechanical drawing
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