Build a short record for the decision
Write down the asset ID, working range, process tolerance, frequency of use and last interval. Bring the readings recorded before adjustment from previous certificates. Compare like measurement points and note changes in use, repairs and any failed intermediate checks.
The equipment owner should also record any contract, manufacturer or regulatory requirement that applies. Put the proposed next date, the reason for it and the person approving it on the same record.
What to do with a short history
An instrument newly moved from an inspection room to a production shift has little history in its new use. Record the date of transfer, the checks operators can make between calibrations and the working points that matter. At the next review, compare the as-found results at those points with the earlier certificate and the acceptance limits in force at the time.
One favourable result may tell you little about a second function the instrument seldom used before. Keep the reason for the selected interval and the date it will be reviewed with the instrument record. The equipment owner makes the decision.
Separate review dates from collection dates
If a frequently used micrometer is moving towards its limit, ask the quality owner to review the interval and the checks between calibrations. A group pickup at IMT Manesar can include several tools, even when their next due dates differ. For a register shared across plants, give RTS the tool owner and release date at each site.