Bimetallic thermometer
Precautions while using Laboratory Thermometers
Bimetallic thermometer
Inthisthermometerthedifferentialexpansionofthindissimilarmetals,bondedtogetherintoanarrowstripandcoiledintotheshapeofahelixorspiral,isusedtoactuateapointer.Insomedesignsthepointerisreplacedwithlowvoltagecontactstocontrol,throughrelays,operationswhichdependupontemperature,suchasfurnacecontrols.












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