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|User since||March 23, 2012|
|Number of add-ons developed||1 add-on|
|Average rating of developer's add-ons||Rated 3 out of 5 stars|
Browser pixel rulers to help inspect window widths of adaptive designs. The add-on button acts as a toggle that adds rulers similar to a graphics app to measure the current window resolution.
This add-on is not compatible with your version of Firefox because of the following:
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