Answer :
an instrument for measuring and indicating temperature, typically one consisting of a narrow, hermetically sealed glass tube marked with graduations and having at one end a bulb containing mercury or alcohol which extends along the tube as it expands.
different types of thermometers are -
1 traditional thermometers
2 multiple sensor thermometers
3 irreversible temperature labels
4 fixed and wired probe thermometers
5 k-type thermometers
6 data logging thermometers
7 infrared thermometers
8 thermal imaging cameras
1 traditional thermometers
2 multiple sensor thermometers
3 irreversible temperature labels
4 fixed and wired probe thermometers
5 k-type thermometers
6 data logging thermometers
7 infrared thermometers
8 thermal imaging cameras