Pythagorean cup

thingiverse

Pythagoras, while overseeing water supply projects in Samos around 530 BC, introduced the "fair cup" to curb workers' excessive wine consumption. When the liquid reaches an upper limit, the cup empties entirely, teaching a lesson to those who overindulge. Now you can print your own version of this ancient invention using STL files! Simply adjust the size as needed; a 1.5 scale will yield a 5cm (2in) cup, for instance.