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A mechanical pencil or clutch pencil is a pencil with a replaceable and mechanically extendable solid pigment core called a "lead" / ˈ l ɛ d /. The lead , often made of graphite , is not bonded to the outer casing, and the user can mechanically extend it as its point is worn away from use.
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In the 19th century, and indeed well into the 20th century, when paper was less readily available, individual students also wrote with chalk on their own small slates. Both pencils and chalk exist in variants which can create marks in other colors, but colored pencils and colored chalk are generally considered to be art supplies rather than ...
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A pencil using this system is also commonly known as a "shaker pencil". A small, metal weight lies around the core of the pencil, and when shaken, slides up and down; thus pushing the lead advancer down and advancing more lead. For ergonomics, the Dr. Grip pencil was designed with a wide barrel and cushioned grip to relieve writing stress and ...
Although Mitsubishi Pencil started as a wooden pencil manufacturer, the company is no longer specialized in that product, focusing on mechanical pencils instead. [16] Uni-ball's writing implements brands include Jetstream (hybrid-ink ballpoint pens); Air, Eye (marketed as Vision in the U.S.A.) rollerball pens, Signo (pigment ink gel pens); Onyx, Kuru Toga (mechanical pencils); [17] Paint ...
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