Way in Firefox to show current window dimensions?

Question

(Closed.) This question does not meet Stack Overflow guidelines. It is not currently accepting answers. question from:https://stackoverflow.com/questions/14184447/way-in-firefox-to-show-current-window-dimensions

Answer 1

I know this is a 4 year old answer, but I don't see anyone mention that you just have to select the toggle rulers option. Go to the settings menu option in the developer tools and check it. That will bring up the ruler icon and just click it and you have your ruler.