Measurement is used for evaluation of product or process exactly. If it couldn't measured correctly, Quality-cost must be raised and it would be hard to improve product quality. So, this study suggests improvement guide line for the multilateral problems of measuring instrument operation based on the investigation of 157 small and medium-sized enterprises in February, 2008. To use measuring instrument correctly, man who treat it must be accustomed with the structure, the performance, the method. The instrument is selected properly for the measurement goal. If not, results couldn't be correctly or wasted time, efforts, and costs. When selecting a instrument, the tolerance, the size, the figure, the material, and the efficiency must be considered. If the measuring instruments are controlled efficiently, it could be accomplished that improving product quality and coinciding with the goal of QM.
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