Water Drinking Abacus

cults3d

If you're like most people who forget to drink their daily quota of water, there's a simple tool that can help you stay on track. This handy abacus lets you keep tabs on how many cups of water you're drinking each day. It comes in three different variations: a smooth one, a grooved one, and a numbered one. The separate pegs are printed to take full advantage of the added structural strength that comes with printing them horizontally.