How to > Advanced features and topics > Analyze > Measure > Measure direction > Measure the normal direction of a face
  
Measure the normal direction of a face
To measure the normal direction of a face
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 with X, Y, and Z fields.
3. You now have two choices for measuring the face direction:
For the face direction out of the part, right-click the viewport and select Face Normal.
For the face direction into the part, right-click the viewport and select -Face Normal.
4. Specify the face. The viewer displays the direction in the X, Y, and Z fields.
5. You can click further measure options, or click to complete the operation.