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Scroll wheel
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{{Short description|Component of a computer mouse used for scrolling}} {{Redirect|Trackwheel|a system of vehicle propulsion|Continuous track}} {{More citations needed|date=July 2020}} [[File:3-Tasten-Maus Microsoft.jpg|thumb|A mouse with a scroll wheel between its two buttons]] A '''scroll wheel''' is a [[wheel]] used for [[scrolling]]. The term usually refers to such wheels found on [[computer mouse|computer mice]] (where they can also be called a '''mouse wheel'''). It is often made of hard [[plastic]] with a [[rubber]]y surface, centred around an internal [[rotary encoder]]. It is usually located between the left and right mouse buttons and is positioned perpendicular to the mouse surface. Sometimes the wheel can be pressed left and right, which is actually just two additional macros buttons.
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