Crawshaw, Fred D. (Fred Duane), b. 1874, Phillips, J. D. (James David), 1869- joint author · Chicago, New York, Scott, Foresman and company · leaf 176
axis and the two nibs of the pen bearwith equal pressure, thus producing sharply defined lines. Thecompass is held by the handle, between the thumb and first fingerof the right hand. It is rotated by rolling the handle betweenthe thumb and finger. Fig. 177. If the compass is allowed tolean very… … Fig. 177. Drawing a Circle with the Compass The pen of the compass is filled, adjusted, cleaned, and sharp-ened in the same manner as the ruling pen. The Bow Pen should be used for all circles and arcs of fradius or less. The pen should be filled and adjusted in the samemanner as the ruling pen.…
Mechanical drawing
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