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Statistical ('Quality') Control of Production

Nature volume 150, page 117 (25 July 1942) | Download Citation



SIR CHARLES DARWIN, director of the National Physical Laboratory, was the principal guest at the July meeting of the Scientific Instrument Manufacturers' Association of Great Britain, and spoke after luncheon about the use of statistical methods in the control of machine-production. He described some developments of these methods in mass-production in the United States ; and the encouraging practical outcome of the discussion on the subject in April held at the Institution of Mechanical Engineers (see NATURE, May 23, p. 573). 'Quality control', as contrasted with simple 'limit' gauging (go or not-go) and the rigid specification of tolerances, applies the principles of the law of errors towards obtaining advance information of the tendencies in course of machine production, and towards correlating the users' requirements with manufacturing economy. Sir Charles gave impressive illustrations of practical results following adoption of this method.

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