Old School Wooden Ruler With Digital Display

It's just yet another concept.

(edit) And I am being down-modded why ? Concepts are dime a dozen. What makes a concept interesting is a working prototype. But even if this one had a working prototype, it is still based on the idea that one has to draw a line in order to measure it. This doesn't strike me as very practical, it's the solution in a search of a problem.