Because they need to measure the air plane
S(he) uses an altimeter which a kind of airborne barometer.
the answer is yes
the answer is yes
how do meteorologist use a barometer
It is called a barometer, first developed in the 1600's
I chipped the glass tabletop when I dropped the barometer.
no
no
meteorologists use barometers
It does not use mercury.
Since the barometer read that the air pressure was high, the boy brought an umbrella outside.
i checked the barometer to see the air pressure