weatherglass

An instrument, such as a barometer, designed to indicate changes in atmospheric conditions.

An instrument dessigned to indicate the state of the atmosphere.

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

See under Poor.

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

a simple barometer for indicating changes in atmospheric pressure