It offers an easy way to get the exact pixel width and height of an area.
Ruler Tool offers an easy way to get the exact pixel width and height of an area anywhere on your display.
Screen ruler for OS X with many intuitive features.
Measures distances on your desktop and identifies color codes.
This app helps you measure objects on your screen.
First on-screen measuring tool which gets the job done.
Screen Ruler is a desktop utility displaying rulers on top of the windows.