Take Screenshot of a rectangular area using Snipping Tool
This process Takes a Screenshot of a rectangular area using the Snipping Tool application. The cursor is dragged around a (user configurable) area to form a rectangle. The captured image is then saved to a file to your Desktop (if the file already exists it is automatically replaced).
The process works both on Windows 10, and Windows 7 (Windows Server 2016 has a slightly different version of the app so may need some minor adjustments in order to work).