Babbit, Arthur B · New York, H. Holt and company · leaf 203
centersof the given circles, drawany indefinite lines A Kand B L. Make G K andH L equal to C D. WithB as a center and radiusB L, draw arc 1. WithA as a center and radiusA K, draw arc 2 intersect-ing arc 1 at M. M is thecenter of the required tan-gent arc. Lines M A andM B will determine pointsof… … lineGH. Measure off HKequal to A B. With G as acenter and radius G K, drawarc 1. Draw line L M par-allel to and a distance equalto A B from C D. (Prob-lems 7 and 21.) Where LMcuts arc 1, draw N T per-pendicular to C D. (Prob-lem 6.) With N as a centerand radius N T^ draw the re-quired tangent arc.…
Mechanical drawing
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