Aneroid Barometer c. 1860

This brass aneroid barometer, created by E. Bourdon around 1860, measures atmospheric pressure using a delicate mechanism. The circular gauge features a needle that points to a scale marked in "livres par pouces carre" (pounds per square inch), a measurement of pressure. The barometer also boasts the inscription "Manometre Metallique de Bourdon Brevete a Paris" (Metallic manometer of Bourdon patented in Paris). This intricate scientific instrument was likely used for industrial or scientific purposes, offering insights into the surrounding environment.