BitRule

BitRule 1.0

BitRule is a free screen measurement tool that is much easier to use than the cumbersome screen ruler and caliper products that mimic their physical counterparts.

Just click on two points on your screen, and get the horizontal, vertical and diagonal distances, as well as the angle to the horizontal. BitRule measures in pixels, inches, centimeters and picas.

Note: as your computer does not know the physical dimensions of your monitor, it may be necessary to perform a very simple calibration if you need exact inch, centimeter or pica measurements.