What Instrument Is Used to Measure Temperature?

What Instrument Is Used to Measure Temperature?. Part of the series: Physical & Life Science. The instrument used to measure temperature is usually the thermometer, although a thermistor can also be used. Learn about the way in which a thermometer works on the basis of liquid expansion with help from a science teacher in this free video on physical science. Read more: http://www.ehow.com/video_4756344_what-instrument-used-measure-temperature.html