Your Purchase Supports Scientific and Educational Endeavors at the
American Museum of Natural History.
Wood Encased Galileo Thermometer
These thermometer have various spheres and is named after Galileo Galilei because he discovered the principle on which this thermometer is based—that the density of a liquid changes in proportion to its temperature—and invented a thermoscope based on this principle.
Do not place in direct sunlight.
Size: 12" has five spheres.