How to > Advanced features and topics > Analyze > Measure > Measure the coordinate system
  
Measure the coordinate system
To measure the 3D coordinate system:
1. Click Analysis and then, in the Measure group, click the arrow next to Direction.
2. Click Direction 3D. The Measure Output dialog box opens.
3. Click Coord Sys.
4. Identify the desired coordinate system axis or plane.
5. You now have two choices:
If the direction of the axis is correct, click Accept.
If you want the opposite direction, click Reverse.
The viewer displays the direction in the X, Y, and Z fields.
6. You can click further measure options, or click to complete the operation.