Both sizes of barometers feature precision German aneroid movements that are calibrated up to 3500 feet above sea level. Both sizes of barometers have an adjustable reference pointer that can be set to the previous barometric reading to indicate if the atmospheric pressure is ...Both sizes of barometers feature precision German aneroid movements that are calibrated up to 3500 feet above sea level. Both sizes of barometers have an adjustable reference pointer that can be set to the previous barometric reading to indicate if the atmospheric pressure is rising or falling.
Rising barometric pressure indicates improving weather and falling pressure indicates a worsening climate. Both barometers are factory calibrated for sea level and have adjustment screws for other altitudes. The medium size clock and barometer measure 5 1/2 inches (14.0 cm) in diameter, and 1 7/8 inches (4.8 cm) deep (not including screws).
The medium size clock weighs 2 pounds, 5.6 ounces (1.07 kg).