Ever wanted to measure objects and other stuff on screen? I came across a Screen Ruler which helps you to do so. It allows you to accurately measure anything on your screen. This is especially useful when measuring graphics, web page browser sizes or anything for that matter. Screen Ruler can display Pixels, Inches, Picas or Centimeters.
When you launch the app, the ruler will appear horizontal showing approximately 400 Pixels in length. Whenever you move the cursor over the Screen Ruler, it will change to cross-hairs and the distance of the cursor from the left (0) of the ruler will be displayed next to the Size Slide Control. You can move the cursor anywhere on the screen by simply left clicking on it and dragging it.