IT is obvious that a well organised Inspection Department must have as part of its equipment a sound system of records. These records become a statistical control providing the essential information relative to the material under inspection, and are as important a part of inspection as the mechanical, visual and chemical tests.
Phipp, M. and Graduate, I.E.I. (1944), "Statistical Control in the Inspection of Materials", Aircraft Engineering and Aerospace Technology, Vol. 16 No. 4, pp. 119-120. https://doi.org/10.1108/eb031118
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