Glass tube filled with liquid that has glass bulbs filled with colored liquid floating in it; each bulb has a metal tag with a number hanging off of it and floats either
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Galileo Thermometers – How they work and how to read them. | Spectrum Scientifics' Store Blog
Galileo Thermometer Floating Glass Balls Fahrenheit Temperature Indicator | eBay
How does a Galileo thermometer work? | HowStuffWorks
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Glass tube with several glass balls with points at the top. Each ball has some liquid and a number on it from bottom to top 64 degrees, 68, 72, 76, and 80 : r/Whatisthis
What's a Galileo thermometer and how do you read it?
Simple Ways to Read a Galileo Thermometer: 8 Steps (with Pictures)
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Galileo Glass Thermometer with Multicolor Floating Balls Office Table Home Decor - jersimport
Glass Galileo Thermometer With 11 Colored Floating Vessels, One Size - Ralphs