#### Elliptical Tolerancing

Elliptical Tolerancing is one of three possible tolerancing types for Target Plots. See "Chart Display - Target Plot" for information on changing the tolerancing used.

Data Requirements for Elliptical Tolerancing

Elliptical tolerancing requires that two dimensional variables exist in the database. Elliptical tolerancing uses the upper tolerances of the two dimensional variables to create the plot’s first ellipsis. The variables must correspond to the reference plane. For example, if the feature is CIRCLE1. and the reference plane is XY, the two dimensional variables would be CIRCLE1.X and CIRCLE1.Y. The greater the difference between the variables’ upper tolerances, the more elliptical the plot will appear. If the upper tolerances are equal, the plot will display circles.

See also:

- Chart Display - Target Plot

- Target Individual Chart

- Target Group Chart

- True Position Tolerancing

- Rectangular Tolerancing