Governor (device)
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A governor, or speed limiter or controller, is a device used to measure and regulate the speed of a machine, such as an engine.
Porter governor on a Corliss steam engine
Cut-away drawing of steam engine speed governor. The valve starts fully open at zero speed, and is closed as the balls rotate and rise. The speed sensing drive shaft is top right
Electronic governor or speed limiter
Gentlemen's agreement
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A gentlemen's agreement, or gentleman's agreement, is an informal and legally non-binding agreement between two or more parties. It is typically oral, but it may be written or simply understood as par
Governor (device)
…although British, also have a limiter, as do the Swedish Saab and Volvo on cars where it is necessary. German manufacturers initially started the "gentlemen's agreement", electronically limiting their vehicles to a top speed of 250 km/h (155 mph), since such high speeds are more likely on the Autobahn. This was done…
Gentlemen's agreements are often verbal and solidified by a handshake.