Yes, pin gauges can and should be calibrated. They can be sent out to a metrology lab or the user can verify diameter with a calibrated mic, caliper or go/nogo gauge. The metrology lab can also ensure the pin gauges are round and parallel[/QUOTE]
That's what I meant when I said "confirm it with a calibrated micrometer." You're right that this is a form of calibration. Where I work, and most places where pin gauges are used professionally, they have a "no calibration required" label rather than a calibration done/required sticker, as they can't be adjusted, only verified. I apologize for the murky terminology; I'm just used to thinking of them as non-calibrated tooling.


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