Barometer Makes How do barometers measure air pressure?

How to make a barometer

Atmospheric Pressure, Overview, Formula & Units - Lesson

How to Understand Your Local Weather Forecast

3.3] Instrument for measuring atmospheric pressure

Atmospheric Pressure

How Does a Barograph Barometer Work? - Dutch Antiques

What are some of the measurement devices we use to describe the weather?

Air Pressure and Weather

How to Set a Barometer: 12 Steps (with Pictures) - wikiHow