Clemens Herschel
Clemens Herschel was an American hydraulic engineer. His career extended from about 1860 to 1930, and he is best known for developing the Venturi meter, which was the first largescale, accurate device for measuring water flow.
Clemens was born in Vienna in 1842. His family immigrated to Davenport, Iowa in 1850. He spent most of his life practicing his profession in Massachusetts, New York and New Jersey. He attended Harvard University, where he received his bachelor of science degree in 1860 from the Lawrence Scientific School. After Harvard, he completed postgraduate studies in France and Germany.
Source: Wikipedia