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How Were The First Thermometers Calibrated? [Solved]
In 1724, the German instrument maker, Gabriel Fahrenheit thought mercury the most suitable liquid for measuring temperature. He calibrated his first thermometer using a mixture of ice and water with sea salt as his zero.
Fahrenheit to Celsius: History of the thermometer
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How to Calibrate Dial Probe Thermometers | eTundra
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First self-calibrating thermometer - iTHERM TrustSens Hygienic compact thermometer
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