Original: Although Evangelista Torricelli is universally credited with inventing the barometer in 1643 , historical documentation also suggests Gasparo Berti , an Italian mathematician and astronomer , unintentionally built a water barometer sometime between 1640 and 1643 .
Simplified: There are various types of barometers such as the water barometer , aneroid barometer , and the mercury barometer . They were created by an Italian mathematician named Evangelista Torricelli in 1643 .