The RasPiO® GPIO Ruler! * is the ideal quick reference for RPi.GPIO hacking on the Raspberry Pi in Python * has all the most commonly used RPi.GPIO code, which can be hard to remember * is a Raspberry Pi port identification aid (GPIO numbers and Alt functions) * can be used as a ruler (cm/inches) * fits easily in a pencil case, toolbox or desk tidy *Please Note* Raspberry Pi not included https://elecena.pl/product/22710649/raspio-gpio-ruler-discontinued 2023-03-06 https://elecena.pl/product/22710649/raspio-gpio-ruler-discontinued 2024-09-19