Definition: A tropometer is a device used to measure atmospheric pressure. It consists of a tube with an open end, a stopper or clamp at one end, and a gauge that measures the pressure difference between the inside and outside ends of the tube. The value of the pressure reading can be converted into standard temperature and pressure units using a conversion factor known as the barometer formula. The term "tropometer" is also used to refer to any device or instrument designed for measuring atmospheric pressure, whether