Calibrations

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Hello everyone,

From now on, I will monitor the calibration and verification of all devices used in my company.

We have our own verification gauges and we do the calibrations. (micrometer, caliper, comparator)
However, I am trying to collect data on the measurement uncertainty of the devices and how the acceptance criteria are calculated. Yes, there are many standards regarding this. The person who made this has retired and I want to check the authenticity of the certificates he created

Is there anyone in their company who does calibration and can share documents regarding this? A sample certificate would be great.