Screen Ruler Professional

Developer's DescriptionBy WonderWebWareMeasure anything on your screen in customizable measuring units.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 such as 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 (including "screen calibration").