Measure Features
Use the Measure tool to measure geometry features including a length, an angle, and the dimensions of a bounding box.
Location: all ribbons, Home group
Click the 
satellite icon that appears when you hover over the Measure tool to view
a list of all measures in your model.
Tip:
- Measurements persist after you exit the tool, are listed in the Model Browser, and dynamically update when you make changes to the geometry.
- When you double-click a length measure in the modeling window, it gives you the x, y, z components of the distance vector in the global system.