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Free Ruler is a screen ruler for OS X with many intuitive features. Great for Web developers, graphic designers and programmers.


  • A horizontal and vertical ruler which can be used independently or simultaneously.
  • Measurement in pixels, inches, picas, or centimeters.
  • Automatic alignment of rulers.
  • The ability to group rulers and move them around as a unit.
  • Shadowless rulers with customizable transparency.
  • Interactive tick marks which follow the mouse location for more precise measurement.
  • Independent resizing of rulers, from 200 pixels to 5000 pixels in length.
  • Single key more...

What's New

Version 1.7b5:
  • Universal Binary!
  • Recompiled using latest version of REALbasic (RB 2007r1)
  • Had to remove transparency support for now - RB2007 doesn't support WindowAlpha plugin..


Mac OS X 10.1 or later

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Current Version (1.x)


Downloads 48,104
Version Downloads 40,948
License Free
Date 02 Jan 2007
Platform OS X / PPC 32 / Intel 32
Price Free
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