Pixel Winch: Screen Measurement App for OS X

I gave this UI measurement tool a whirl and I was really impressed

 

Pixel Winch is a screen measurement app with a unique approach. Rather than overlaying complicated controls on top of your existing workflow, it combines aspects of a traditional image editor with the quick access of a modal interface (similar to OS X’s Launchpad or Dashboard).

Read more from the source: ricciadams.com