Prony brake

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English[edit]

English Wikipedia has an article on:
Wikipedia

Etymology[edit]

Invented by Gaspard de Prony in 1821.

Noun[edit]

Prony brake (plural Prony brakes)

  1. A device to measure the torque produced by an engine, essentially by wrapping a cord or belt around the output shaft and measuring the force transferred to the belt through friction.