A shorter course in woodworking; a practical manual for home and school (1911)
Wheeler, Charles G. (Charles Gardner), 1855-1946 · New York, London, G.P. Putnam's sons · leaf 259
it will be very nearly an ellipse. Another method: mark on a strip of cardboard or wood from a givenpoint A (Fig. 632) the lengths of the long and short diameters of the requiredellipse. Place the marking point at A and move the points B and C alongthe long and short diameters. The marking point… … Fig. 632 There are other methods of describing an ellipse, but the one first givenis the most convenient for ordinary work. All methods of drawing ellipseswith compasses are inaccurate, because an ellipse is not a circular curve inany part.^ For curves which are not arcs of circles, in cases where…
Woodwork
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