Galileo's Thermometer' or 'Termometro Infingardo', 1989-1999

Thermometer consisting of a number of glass balls weighted to be of different densities, in a liquid, arranged to sink one after the other as the temperature rises, known as a 'termometro infingardo' or (incorrectly) as 'Galileo's thermometer', made by Ad-Glass, Stillwater, Oklahoma 14075, 1989-99.

The Invention of the Thermometer - The Italian Tribune

Galileo Thermometer

Galileo's Thermometer Fahrenheit, 13.5 - Arbor Scientific

Galileo's Thermometer Fahrenheit, 13.5 - Arbor Scientific

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EASY READ 23 Tall Galileo Thermometer – ZoCo LLC

Vintage Galileo Galilei Thermometer 11 Tall Glass Tube with 4 Floating Spheres

Galileo's Thermometer' or 'Termometro Infingardo', 1989-1999

How does a Galileo thermometer work?

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