Stimulate curious minds using the laws of physics with our collection of vintage Galilean thermometers. Based on a design by Galileo, these liquid Galileo thermometers have blown glass balls of varying colors that rise and fall within a liquid-filled cylinder, based on the temperature. Each ball is accented with a small charm that shows a degree reading. For the most accurate reading, look at the metal tag of the lowest glass ball of the top grouping. Place these handsome desktop Galilean thermometers in your home or office or display our elegant hanging Galileo thermometer in your yard or garden. A unique home accent or gift for any weather enthusiast, history buff or physics lover!