This list is only available for the Cylinder feature.
The Use Theo's list specifies whether to use the theoretical information displayed in the Auto Feature dialog box when calculating the actual feature information from the measured data collected.
When you select Yes, the Best Fit algorithm will use the theoretical values (position, vector, and diameter) as an initial guess for the calculation to ensure the correct convergence of the algorithm to the desired solution. You can select Yes when the valid theoretical values and alignment are defined.
Select No when no valid alignment or theoretical values are available.