MEASUREMENT TOOLS: distance and area

To measure from point A to point B, we have set up the temporary measurements, the temporary measurements are represented by the ruler in the horizontal menu at the top of the page: 

Click on your point A and then on your point B, to stop the measurement area right click with your mouse:

You can also calculate an area, just connect several points:

To exit this feature, either click on the rule again or press the ESC key.