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"A modification of Savery's engine, the pulsometer, is still quite common. It is used in places where an ordinary pump could not be used and where extreme simplicity is of especial advantage. Its valves work automatically and it requires very little attention." —Derr, 1911

Pulsometer from Steam Engine

"A modification of Savery's engine, the pulsometer, is still quite common. It is used in places where…