Screen Ruler Professional

Screen Ruler Pro was made for one single purpose -- to be the best screen ruler out there. The tool is highly configurable and comes with different useful options (just some of them listed below): measure in pixels, millimeters, centimeters, points, inches define your own units horizontal and vertical guides customizable colors and translucency customizable tickers and direction rotation and "diagonal" measurement supported use figures to measure area and perimeter works with multi-display systems customizable ppi settings (incl.

"screen calibration") works on Windows and Mac
What's new in this version:
New features and improvements upon user requests