Handmade Glass Cartesian Diver Bottle Water Devil Imp

Description

These are usually seen only in old Victorian science amusement books. It was amazing to find that they are being made in limited quantities today! Just fill a plastic bottle with water, drop in the imp, and screw on the cap. By adding and removing pressure by squeezing the bottle, the diver will sink or float. By rapidly changing the pressure, the imp will dance and pirouette! Comes complete with instructions! Various colors, our choice, please. Diver and instructions only. Buy Now!