Ever needed to measure the distance between two HTML elements, without achieving it through code?
I found a tool a while ago that allowed me to do just that; it was, essentially, a virtual ruler. Called Pixel Ruler, this free application makes a ruler appear on your screen. You can place it anywhere you want, horizontally or vertically, and use it to measure pretty much anything. It is a little buggy at times, but I still recommend you give it a try.