To Create Measurements

1. Click Interaction > Measurement.
2. Right-click in the upper part of the Measurement dialog box and select the type of measurement you want to create.
3. Follow the prompts in the main window to select your measurement points.

   For example, "Select first Point," means to Shift-click the first point of measurement. The points and their values are displayed in the Properties section of the Measurement dialog box. Some types of points can be modified; these have a Pick button beside them in the Measurement dialog box.

4. For points that can be modified, click Pick and then Shift-click in the scene where you want the new point to be.
5. Set visibility, color, and precision using the controls under Visualisation.