“Perfect for remembering the GPIO pins on the Raspberry Pi. . I use this ruler regularly for many different things and projects. Longer lasting than a normal ruler if you have kids around! It is sturdy and wont snap easily :)”
“The RasPiO GPIO Ruler is wonderfully well thought out tool, I use it as a quick reference even when no pi is about. I have even started to measure my world in GPIOs, much more baffling than the imperial system.
Overall, and jokes aside, this is something you should have in your Pi toolkit.”
“I really like the Raspberry Pi ruler. Just so handy to keep on my desk. Don't have to go find a book with the GPIO pinout when working on a Pi project.”