Microsoft is launching a new PowerToys utility -- Screen Ruler
The last few PowerToys updates have been slightly disappointing (but only slightly) in as much as they have been largely bug-fixing releases, and have not included any new toys to play with. This is about to change.
Microsoft has a new utility in the pipeline, and its name gives you a very good idea of what it does: Screen Ruler. Perfect for all sorts of design work, the tool will let you measure the distance between two points on your screen in a number of ways.