Pupillary distance is the space — measured in millimeters (mm) — from the center of one pupil to another. When you need glasses, an optometrist or an optician will measure this distance to make sure ...

Measuring distances accurately has become significantly easier with the advent of smartphone technology, particularly with the array of distance measuring apps available for both Android and iPhone.

Open earth.google.com. Go to Tools > Measurement. Click on the starting point. Hover your mouse and click on the endpoint. Head to the Measure pop-up box. To learn more about these steps, continue ...