Galileo Thermometer Large 17" 47508 Brave the chaos of everyday

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Galileo Thermometer Large 17" 47508 Brave the chaos of everydayThis thermometer is based on a scientific principal discovered by Galileo. As the liquids in the cylinder contract at higher temperatures, the spheres of slightly different weights rise; as the liquids cool, the spheres drop. The lowest floating sphere in the upper part of the cylinder tells the correct temperature. Fahrenheit on one side of the hanging plaques, centigrade on the reverse. Made of glass, it's an attractive and fascinating way to