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Draftsman’s Method

for Drawing an Ellipse

W

HEN LAYING OUT ANellipse, most people care more about its
finished length and width than about the distance between
the two focal points. The draftsman’s method shown in the sketch
below gets directly to the point without requiring calculations
and gadgets.
—LAWRENCEWHYTOCK,Brockville, Ont., Canada

MEASURING, MARKING & LAYOUT

Draw axis

lines.

Draw line through center,

then drop lines parallel

to axes. Repeat to plot ellipse.

Desired width

Desired length

of ellipse