thermometer
They are both measuring instruments.
thermometer
barometer, anemometer, thermometer, hygrometer, and a wind vane.
telescope, micrscope, barometer and thermometer
A thermometer and a barometer
Thermometer and rain gauge
Alcohol thermometers are relatively fragile and can break if dropped or mishandled. It is important to handle them with care to ensure longer durability.
It could be used to do this - it is capable of doing it. However, Mercury is poisonous and a mercury thermometer is made out of fragile glass. Thus the danger that the thermometer would break releasing mercury into the milk (which would be for a person to drink) means that a mercury thermomiter is not the temperature sensor to use in this instance.
0.1 is typical, however if you have a Beckmann thermometer then you can read 0.01 0C. These thermometers are large expensive and fragile so not commonly available even in laboratories.
Scientific instruments are tool used to aid people in scientific experimentation, measurements, etc. Some examples would be a thermometer, barometer, seki dish.
Temperature is measured by a liquid in glass thermometer in most cases. Other instruments such as thermocouples, resistance or digital thermometers are used for more extreme conditions.