People need to measure stuff. There’s no denying that. And to the best of my knowledge, doctors still aren’t removing splinters out of your schlonger for free. So it is with a great relief that the old school wooden ruler has finally wizened up and gotten itself a digital display.
Push down on the edge of the device† to mark where you want to measure and the ruler’s circuitry does the rest.
I hear that rulers are also useful for purposes other than measuring your junk.† I remain a skeptic.