Barometric Pressure

Barometric pressure refers to the pressure measured by a barometer. A barometer is a device used to measure atmospheric pressure. There are many different types of barometers, such as mercury barometers (which have a column of mercury that rises when the atmospheric pressure increases) and aneroid barometers (which have a piece of metal which changes its dimensions when pressure changes). The mechanism for measuring pressure may be different for the different types of barometers, however they all measure atmospheric pressure.

Barometric Pressure is a term used to describe the atmospheric pressure measured by a barometer.