In the Parameters for Feature Fitting dialog, the Tolerance parameter controls the zone that PowerInspect uses to select the points. For best results, enter a value that slightly exceeds the measurement tolerance for the part. The following examples show how changing the tolerance parameter can affect the points selected. Selected points appear in white.
The tolerance value slightly exceeds the measurement tolerance for the part and the selected points identify a sphere:
If the tolerance value is too low, not enough points are selected:
If the tolerance value is too high, too many points are selected:
