In the 18th century the barometer, introduced around the mid-17th century as a laboratory instrument for studying pneumatics, became an indispensable tool for the development of meteorology. Variations in atmospheric pressure are, in fact, closely linked to changes in the weather.
Nicolas Fortin, Paris, 1780
Maker unknown, late 18th cent.
Maker unknown, ca. 1760
Maker unknown, Italian, second half 18th cent.
Adams, London, second half 18th cent.