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Galileo Thermometer | Shop 17-Inch Galileo's Thermometer For Your Density Lab & Homeschool Lesson Plan at Teachersource.com
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
Galileo Thermometers – How they work and how to read them. | Spectrum Scientifics' Store Blog
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Clear Glass Tabletop Galileo Thermometer with Colorful Temperature Markers | Wind and Weather
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Palais Essentials Galileo Thermometer - Floating Glass Balls Fahrenheit Temperature Indicator - Fun and Decorative 5 Purple Balls - Walmart.com