Lightbulb Galileo Glass Thermometer

A Large Light Bulb Galileo Thermometer on a metal stand from WILLIAM WIDDOP®. This Galileo thermometer contains small glass vessels of varying densities that denote the temperature. As the temperature changes throughout the day, the floats will rise or fall to indicate what temperature it is. It is named after Galileo Galilei who discovered the principle that the density of liquids change in relation to temperatures.