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barograph
(redirected from barographs)

   Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson 0.01 sec.
barograph, instrument used to make a continuous recording of atmospheric pressure. The pressure-sensitive element, a partially evacuated metal cylinder, is linked to a pen arm in such a way that the vertical displacement of the pen is proportional to the changes in the atmospheric pressure. The pen traces a record of pressure versus time on a chart, which is mounted on a drum rotated by a clockwork. Each chart usually provides one week's record. See barometer barometer (bərŏm`ətər), instrument for measuring atmospheric pressure.
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