The Civilized Glass by Mr. Sci Science Toy Factory | The Civilized Glass: http://physicstoys.blogspot.com/p/physics-toy-store.html A most elegant version of the famous Pythagorean cup. Functions as a... | By Physicsfun | Facebook
Pythagorean Cup - Physics and Chemistry Lab Supplies and Equipment
Pindar Vineyards - Products - Pythagoras
3D Printed Greedy Cup by abhinav_pandey | Pinshape
Pythagoras Cup/greedy Cup - Etsy
The Pythagorean Cup Will Keep You From Drinking Too Much | VinePair
Improved Greedy Cup / Pythagorean Cup by Sebastian K | Download free STL model | Printables.com