Weatherglass

(n.) An instrument to indicate the state of the atmosphere, especially changes of atmospheric pressure, and hence changes of weather, as a barometer or baroscope.

Thesaurus Entries

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