Features Specifications:Sell Galileo Thermometer (glass galileo thermometer, indoor thermometer)  Galileo Thermometer (glass galileo thermometer, indoor thermometer)  In liquid, a solid body with the same weight and size is compelled to go down as the temperature rises. On the other hand the solid body goes up in the liquid if the temperature falls. The glass balls differ in weight and considering density of the liquid you are guaranteed that the lowest of the floating balls in the upper part of the cylinder indicates the temperature