Working with Markups > Measurements > 3D Measurements > To Create a Projected Distance Measurement
  
To Create a Projected Distance Measurement
1. In the Measure Distance dialog box, click . The dialog box expands.
2. Click . The measurement is projected on the global coordinate system by default.
3. To change the coordinate system, select the Projection reference collector, and then select a new coordinate system.
4. To change the direction of the measurement, select or clear the X, Y, or Z check boxes. The measurement is created in the directions that are selected.
5. Click to remove the absolute distance, or leave it selected to include both measurements in the annotation set.
6. Click . The measurement is saved to the annotation set.