Explanation

• Thermometer is used to measure  the temperature
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• Temperature measurement (also known as thermometry) describes the process of measuring a current local temperature for immediate or later evaluation. 
• In a mercury thermometer, a glass tube is filled with mercury and a standard temperature scale is marked on the tube.
• Mercury is used in thermometers because It has a high coefficient of expansion so that even a small rise in temperature 
• Galileo Galilei is claimed to be the inventor of the thermometer in 1714.
• Water freezes at 32 F and boils at 212 F
• SH6-9-2023