Abstract
Considerable attention has already been devoted to the many aspects of the inspection task and findings suggest that the factors affecting the efficiency of inspection are subtle and not easily controlled. However, observation of the visual inspection techniques used in most factories suggests that this is not generally recognised and that there is an entirely misplaced confidence in the effectiveness of 100% visual inspection In this study, consideration is given to some of the factors affecting visual inspection, and trials have been made, which, whilst showing inspection decisions to be inconsistent, suggest ways of achieving a progressive improvement. It is recognised, however, that variability is inevitable in the making of subjective judgements.

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