You can change the ruler unit from inches to centimeters ... and ads. Picas are 1/6 inch and contain 12 points. The same applies to any Microsoft Office, including Excel, PowerPoint, and more.

A ruler seems like a pretty simple device; just a nice straight piece of material with some marks on it. There are some improvements out there to the basic design, like making it out of something ...

the thing can indeed be used as a plain ol' ruler, or as a straight edge for drawing lines. It has laser-engraved numerical markings going up to 12 cm along one of its edges, and up to 5 inches ...