barographic

barograph

[bar-uh-graf, -grahf]
noun
any of several automatic recording barometers, of which the most common is the aneroid barograph.

Origin:
1860–65; baro- + -graph

barographic [bar-uh-graf-ik] , adjective
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World English Dictionary
barograph (ˈbærəˌɡrɑːf, -ˌɡræf)
 
n
meteorol a self-recording aneroid barometer
 
barographic
 
adj

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American Heritage
Science Dictionary
barograph   (bār'ə-grāf')  Pronunciation Key 
An instrument that continuously records changes in atmospheric pressure. A barograph typically consists of an aneroid barometer connected to a pen; the pen is in contact with a piece of paper mounted on a cylinder that rotates once on a daily or weekly basis. As the atmospheric pressure changes, the pen is displaced in proportion to the change, thus a record of the pressure is traced onto the rotating sheet of paper.
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