#### 3D Alignment Center of Rotation

For certain Best Fit alignments, you can specify a center of rotation. This can be done one of two ways.

1. Select a feature from the Alignment Features selected list box. Next click the Set button. The theoretical and measured values will automatically be entered into the appropriate boxes in the Rotate About area.

2. If a specific coordinate is desired, the value can be entered manually by typing the XYZ coordinate into the Theoretical and Measured boxes. The value must be in a comma-delimited format in order to be valid. For example, Xtheo, Ytheo, Ztheo.