Barometer with reciprocally adjustable scales for meteorological and barometric pressure indications (Machine-translation by Google Translate, not legally binding)

摘要

Barometer with reciprocally adjustable scales for meteorological and barometric pressure indications with an adjustment device for readjusting the indicator needle according to the barometric pressure corresponding to a height above sea level characterized because for the indication of time and pressure in each case, a part of the sphere is provided and the two parts of the sphere are coaxially located and reciprocally adjustable. (Machine-translation by Google Translate, not legally binding)