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snap gauge

measurement instrument

Quick Summary

A snap gauge is a type of measurement instrument used in manufacturing and engineering. It's a fixed-type gauge, meaning it indicates whether a dimension is within a specified range, rather than measuring the exact size. Shaped like the letter 'C', it features two jaws: one marked "go" and the other "not go." These jaws are set to the upper and lower tolerance limits for a particular dimension. The snap gauge is used to check diameters, lengths, and thicknesses by seeing if the object fits between the "go" and "not go" jaws.12

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