Demonstrate Torricelli’s theorem to show the relationship between water pressure and depth. This clear acrylic cylinder, 19-5/16″ high, includes three vertically aligned spouting nozzles positioned 4-3/4″ apart. Each spouting nozzle also includes a stopper so pressure at each height can be shown individually. A filler hose barb at the top can be used to quickly refill the cylinder or maintain a constant water depth.