Fry, Horace Pugh. [from old catalog] · Philadelphia · leaf 46
/50METRIC PROJECT\ONOF A CIRCL.E D … RAP\0 3 PO\NT METHODFig. 36. 8. The Isometric three-point ellipse may be constructed quicklyby drawing lightly, with C as the center, a circle whose diameterD—D is equal to the circle to be projected. The four diameterpoints D and the two S points will fall on this circle and, as shownin Fig. 36,…
Mechanical drawing
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