(n.) An instrument for determining atmospheric pressure, and hence for judging of the probable changes of weather\, or for ascertaining the height of any ascent.

aerological instrument aneroid barometer aneroidograph barograph barometrograph canon check criterion degree feeler gauge glass graduated scale hurricane-hunter aircraft hygrometer measure model norm parameter pattern pilot balloon probe quantity radiosonde random sample reading readout recording barometer rule sample scale sound sounder standard straw vote test touchstone trial balloon type vacuometer value weather balloon weather instrument weather satellite weather vane weathercock weatherglass yardstick