Conversion calculator for units of power
A unit of power, 18th – 19th centuries, = 1/12th horsepower. The term was used in the early days of the steam engine and the internal combustion engine to describe the power of small engines. It corresponds fairly exactly to the amount of power a healthy man can exert over a period of a few hours.
Turner's Gas Engine.
Iron, volume 15, no. 3 (9 January 1880)
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