To use the Perpendicular lock when measuring
- Click Review tab Measure panel Measure drop-down.
- Click a Point measure tool.
- Press P, or on the Measure panel, click Lock drop-down Perpendicular .
- In the Scene View, hover your mouse on the model and use the surface snap to select a surface. Your measurement will be perpendicular to this surface.
- Click the start point of the distance to be measured in the Scene View.
The measure line is displayed as a solid yellow line when it is perpendicular to the surface of your start point.
- Click the end point of the distance to be measured in the Scene View.
The optional dimension label displays the measured distance.
Command entry: Press
P when using a Measure tool.