A practical course in mechanical drawing for individual study and shop classes, trade and high schools (1912)
Willard, William Franklin, 1879- · Chicago : Popular mechanics company · leaf 43
MF as centers describe arcsintersecting C-i. These are points of the eUipse. Pro-ceed until enough points are determined to locate thecurve. The lower half by the circle method is self-evidentfrom the illustration. Fig. 38. Exercise jp.—Trammel method. Fig. 39, Con-struction : Lay oft* on a small… … Figf. 38
Mechanical drawing
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