Once upon a time, mercury thermometers were the most common way to check for fever.

In the past it was a big problem, because mercury thermometers needed a long time to find the temperature.

A mercury thermometer, for example, is a simple heat-sensing instrument.

Next he took out a mercury thermometer and held it close to the body, measuring the air temperature.

While mercury thermometers were once found throughout the world, many nations have banned them due to health concerns.

You might have a mercury thermometer where you can observe this effect.

It is hard to justify why you can still find mercury thermometers in pharmacies, but they are.

There is no justification any longer for using mercury thermometers in a lab.

The mercury thermometer was left outside accidentally, and has been broken.

For this purpose a mercury thermometer is usually mounted on the instrument.