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Tag: plastic

British Thornton Slide Rule

Posted on March 29, 2025April 1, 2025 By Bob No Comments on British Thornton Slide Rule

Alexander George Thornton founded his business in 1880 in Manchester, took over the Precision Instrument Co in 1901 and in 1967 changed the name of the company to British Thornton. The firm grew to become one of the largest manufacturers of drawing instruments and slide rules in Britain. PIC continued to be used by Thornton…

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