Atmospheric pressure is very important for predicting the weather. There are several tools that help us measure it:

1. Barometer: This is the most popular tool for measuring pressure. There are two main types of barometers:

   • Aneroid Barometer: This type has a flexible metal container. When the pressure changes, the container gets bigger or smaller. This movement moves a needle on a dial to show the pressure.
   • Mercury Barometer: This type uses a tube filled with mercury. When the air pressure changes, it makes the mercury go up or down in the tube.

2. Digital Pressure Sensors: These gadgets give us real-time information and are used in automated weather stations.

3. Weather Satellites: These high-tech tools can measure atmospheric pressure over very large areas using special technology.

All of these tools help meteorologists, or weather experts, predict the weather better!