Crawshaw, Fred D. (Fred Duane), b. 1874, Phillips, J. D. (James David), 1869- joint author · Chicago, New York, Scott, Foresman and company · leaf 134
joint of the removeable pen and pencil parts. These are made in various forms. PENCIL MECHANICAL DRAWING 129 They usually consist of a shank on the pen and pencil partswhich fits into a corresponding socket in the compass leg. Theproper position of the shank in the socket is insured hy somedevice… … Fig. 135. Drawing a Circle with the Compass The legs of the compass should move in the same plane. Totest the compass for alignment: 1. Place the parts in the sockets. 2. Bend the legs out at the head, and 3. Bring the joints together, as shown in Fig. 136. If thepoints are exactly together the…
Mechanical drawing
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