Aneroid Barometer

An aneroid barometer is a device used to measure atmospheric pressure without the need for liquid. It consists of a sealed metal chamber that expands or contracts with changes in air pressure. As the air pressure decreases, the chamber expands, and this movement is translated into a pressure reading on a scale, often used to predict weather changes. Higher pressure typically indicates clear weather, while lower pressure can signal storms. Aneroid barometers are portable and commonly found in homes, ships, and on weather instruments, making them valuable tools for weather forecasting.