The altimeter is a barometer that measures the air pressure and converts the readings into feet of altitude.
(The altimeter; is; a barometer that measures the air pressure and converts the readings into feet of altitude) (a barometer; measures; the air pressure) (a barometer; converts; the readings; into feet of altitude)
The altimeter a barometer a barometer
is measures converts
a barometer that measures the air pressure and converts the readings into feet of altitude
the air pressure
the readings into feet of altitude