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A pair of pliers, as the name implies, consists of two levers working together to give the user a tighter grip than would be available with bare hands. Understanding how those levers function and interact can make for a child's science project, or simply help a workman understand the tools of his trade.

Read more : http://www.ehow.com/about_6374578_do-pliers-work-lever_.html

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10y ago

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