Explain how six maximum and minimum thermometer works ?

A six maximum and minimum thermometer is a type of thermometer that is designed to record the highest and lowest temperatures reached over a certain period of time.

The thermometer consists of two separate mercury columns, one for recording the maximum temperature and one for recording the minimum temperature. Each column has a small metal index that is pushed up by the mercury as the temperature rises, and remains in place even if the temperature drops back down.

To reset the thermometer, a small magnet is used to pull the metal index back down to the current temperature reading. This allows the thermometer to continue recording the highest and lowest temperatures reached since the last reset.

Overall, the six maximum and minimum thermometer provides a simple and effective way to track temperature fluctuations over time.