Sir Joseph Whitworth (1803-1887) is considered among the top Victorian mechanical engineers. He is best known for his development of a rationalized system of screw threads and for the screw threads that bear his name: British Standard Whitworth (BSW). He proposed this thread system in 1841 and the relevant British Standard is BS 84: 1956. His principal contribution was his introduction of new standards of accuracy in manufacturing to a degree previously unknown.

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Keywords: 1800s, 19th, british, bsw, century, engineer, english, inventor, joseph, mechanical, screw, sir, standard, threads, victorian, whitworth