US Patent 10422638 Level with rotating angle indicator

A tool, such as a level, including a rotating angle indicator is provided. The level may include a gripping structure for coupling the level to a workpiece. The level may include one or more bubble level vials. The level may include a window arrangement to provide viewing of an angle-indicating needle from a variety of angles, and one such window may be located at the end of the level and at least partially surrounds the angle-indicating needle.