ClipArt ETC
An ellipsograph uses the trammel method to create ellipses.

Construction of Ellipse using Ellipsograph

An ellipsograph uses the trammel method to create ellipses.

Create diameters with major, minor axes, or a pair of conjugate diameters. Construct a parallelogram, then divide into equal parts creating intersections for the curve.

Construction of Ellipse using Parallelogram

Create diameters with major, minor axes, or a pair of conjugate diameters. Construct a parallelogram,…

An ellipse can be constructed by pinning three pins and tying an inelastic in tightly around the pins.

Construction of Ellipse using Pin and String

An ellipse can be constructed by pinning three pins and tying an inelastic in tightly around the pins.

Trammel method is a construction of an ellipse using a strip of paper, thin cardboard or sheet celluloid.

Construction of Ellipse using Trammel Method

Trammel method is a construction of an ellipse using a strip of paper, thin cardboard or sheet celluloid.