Great new Firefox extension

I didn't write it, but I'm sure using it a lot!

[MatthewHSE]

MeasureIt Firefox Extension [kevinfreitas.net]

This little tool is so simple, yet so useful, I just had to share it:

Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.

I've only had this extension for a day, but it's already been very useful a few times.

[keyplyr]

That Rules!

[BlobFisk]

I've been using Screen Callipers for this for a couple of years, but this is certainly a very very useful extension!