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MSC was founded in 1941 as Sid Tool, Inc., by Sidney Jacobson, in New York's Little Italy. It originally sold cutting tools and accessories to New York City machine shops. [3] The company later moved its headquarters to Plainview, New York.
Late 19th-century reduction compass. The reduction compass or proportional dividers is a geometry tool with asymmetric-length branches to allow performing homothetic transformations, reproducing a pattern while enlarging or reducing its size and conserving angles.