Abstract

The second part of this article, published in last month's issue of AIRCRAFT ENGINEERING, described some of the practical applications of the quality control method to machine shop production and, in particular, the use of control charts based on measurement. The present issue deals with a method of quality control based on the use of limit gauges, and with the applications of the control chart for “number defective” appropriate to this method. A further article, to be published in a subsequent issue, will discuss the extension, of the quality control idea to the sampling inspection of components and similar products in bulk, as an economic alternative to the detail (100 per cent) inspection which hitherto has been customary in such cases.

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