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A tool used to measure the power output of things such as turbines and waterwheels.

Dynamometer

A tool used to measure the power output of things such as turbines and waterwheels.

"Some forms of centrifugal pump, however, have been designed for use with horse power and even for windmills."—Government Printing Office, 1897

Centrifugal Pump

"Some forms of centrifugal pump, however, have been designed for use with horse power and even for windmills."—Government…