Industrial drawing and geometry; an introduction to various branches of technical drawing (1911)
Spooner, Henry John, 1856- · London, New York [etc.] Longmans, Green, and co. · leaf 87
Fig. 213.—Ellipse, paper trammel method. ■/////////////,WM^///////.^o Pig. 214.—Quadrant of an ellipse aslocus of a point in the line AB. … Pig. 215.—Rectangle and theinscribed ellipse. shown, the point c will trace the curve. When the two axes are nearly the same length, ac and he should be set off each side of c, as shown at &and a on the second strip. The curve is then traced by c, whilst a! and 6 are kept on the axes and the…
Mechanical drawing · Geometrical drawing
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