Pixel Ruler!

[DesignerBill]

If you design web sites on a Windows machine, this is something you'll wonder how you ever got along without. Wish I had found it a few years ago...

http://www.arulerforwindows.com/​

There are a few others available, but this one serves the purpose.

 

[Absolution]

Nice. I guess it doesn't do em since that unit is variable from screen to screen? Or does it do em?

 

[PixelPusher]

Very cool, thanks for sharing!

 

[Edge]

This is great thanks! Will often beable to use this