Mechanical drawing; a treatise on the drawing of mechanical and machine details (1920)
Jones, Franklin Day, 1879-1967 · New York, The Industrial press; [etc., etc.] · leaf 335
Fig. 9. Joint of Little Finger used as Pivot when drawing theLarger Circles … Fig. 10. Top View of Pad upon which Circle is being drawn —Note Accuracy of Circle SKETCHING 323 sketches require circular as well as straight lines. It is ratherdifficult to draw, free-hand, what, even in the spirit ofcharity, might be called a circle; but circles can be drawnquite satisfactorily…
Mechanical drawing
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