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Galileo Thermometer - $20 (Newtown)

condition: like new
size / dimensions: 12-1/2" x 2-3/4"
Galileo Thermometer - History: Searching for a way to measure temperatures, Galileo discovered this fascinating method. The lowest floating ball indicates the current temperature. If all the balls float to the top, the temperature is below the lowest floating ball. If all the balls sink, the temperature is above the highest ball. Indoor use only. Instruction card included.



post id: 7867566973

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