Every story and comment from the Hacker News API, in a layout borrowed from 2001.
A comment on Dimensions – Measure everything you see in the browser.
And if you just want a box that can be dragged around there's Page Ruler: https://chrome.google.com/webstore/detail/page-ruler/jlpkojj...
And if you just want a box that can be dragged around there's Page Ruler: https://chrome.google.com/webstore/detail/page-ruler/jlpkojj...