Windscreen Wiper
A windscreen wiper (Commonwealth English) or windshield wiper (American English) is a device used to remove rain, snow, ice, washer fluid, water, or other debris from a windscreen, vehicle's front window. Almost all motor vehicles, including cars, trucks, buses, train locomotives, and watercraft with a Cabin (ship), cabin—and some aircraft—are equipped with one or more such wipers, which are usually a legal requirement. A wiper generally consists of a metal arm; one end Lever, pivots, and the other end has a long rubber blade attached to it. The arm is powered by a motor, often an electric motor, although pneumatic power is also used for some vehicles. The blade is swung back and forth over the glass, pushing water, other precipitation, or any other impediments to visibility from its surface. The speed is usually adjustable on vehicles made after 1969, with several continuous rates and often one or more ''intermittent'' settings. Most personal automobiles use two synchr ...
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