Screen Beagle • Measurer
The Measurer utility is intended for measuring the distances and angles between any points of the screen. Information window contained loupe area, cursor position, offsets, distance and angles are available in this utility.
After calibration Measurer can measure sizes and distance in real units - millimeters and inches. To calibrate open Preferences dialog and choose real DPI of your screen using real ruler and virtual ruler in the preference dialog.