posted by junkdog

I have never heard of this but in reading the description it is a method of drawing arcs of large dia circles given three points on the arc.A large arc can also be drawn using a long string of desired radius. Given an arc of unknown radius mark three points equidistant apart and connect the points. Then construct the perpendicular bisectors of each chord. these two lines meet at the center of the circle. Measure radius. Or if the angle between the chords can be determined then the radius can be calculated

bj