Screen Ruler Professional Short Description:
Use screen ruler to measure anything on your screen (mm, cm, px, in, pt).
Screen Ruler Professional Long Description:
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