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===Standardization=== [[File:JFIScrewThread300.png|thumb|right|Graphic representation of formulae for the pitches of threads of screw bolts]] The implementation of standards in industry and commerce became highly important with the onset of the [[Industrial Revolution]] and the need for high-precision [[machine tool]]s and [[interchangeable parts]]. [[Henry Maudslay]] developed the first industrially practical [[screw-cutting lathe]] in 1800, which allowed for the standardization of [[screw thread]] sizes for the first time.<ref name="Ping">{{citation|url=https://www.eastwestcenter.org/publications/brief-history-standards-and-standardization-organizations-chinese-perspective|title=A Brief History of Standards and Standardization Organizations: A Chinese Perspective|author=Wang Ping|publisher=[[East–West Center]] |date=April 2011}}</ref> Maudslay's work, as well as the contributions of other engineers, accomplished a modest amount of industry standardization; some companies' in-house standards also began to spread more widely within their industries. [[Joseph Whitworth]]'s screw thread measurements were adopted as the first (unofficial) national standard by companies around Britain in 1841. It came to be known as the [[British Standard Whitworth]], and was widely adopted in other countries.<ref>Gilbert, K. R., & Galloway, D. F., 1978, "Machine Tools". In [[Charles Singer]], et al., (Eds.), ''A History of Technology''. Oxford, Clarendon Press</ref><ref>[[Sidney Lee|Lee, Sidney]] (Ed.), 1900, ''[[Dictionary of National Biography]]'', [https://books.google.com/books?id=tzsJAAAAIAAJ Vol LXI]. Smith Elder, London</ref>
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