Thermo Scientific Apreo User's Operation Manual page 128

Align Feature
This utility is designed specifically for long features that extend off the
screen at the magnification required for an observation. It applies the
mapping process by bringing the long feature either to the horizontal or
vertical stage axis to make navigation easier. This can be performed at any
point within the stage field limits. It takes into account the stage rotation
offset.

Note
Align Feature works best at the eucentric position (see above). Longer distances result in greater accuracy.

C a u t i o n !
Watch for obstacles extending significantly from the sample plane, as these may interfere with equipment under the lens.
1. Find a long feature of interest on the sample.
2. Click on the Stage menu / Align Feature.
3. Choose Orientation, either Horizontal or Vertical, that relates to the desired final orientation of the feature.
4. Click on the first point along the feature. The Position 1 coordinates update.
5. Moving the mouse continuously updates Position 2 coordinates; clicking anywhere along the feature stores them.
The Angle shows the value that is used to correct alignment of the feature along the horizontal / vertical axis.
Right-clicking anywhere on the image area deletes points, enabling them be defined again.
6. Drag any point to change its position if needed. Click on the OK button to finish the setting.
5-30 User Manual
Operating Procedures: Stage Control
C O N F I D E N T I A L – limited rights
Feb 2018 Revision A