I do gage calibration for a small aerospace shop and have a question. We have 2 sets of master gage blocks, when one set expires we bring out the other set and send the expired set to outside calibration. When the expired set comes back from calibration it get locked up in a cabinet until the 2nd set expires. The set in the cabinet can sit for 11 months before being used. We make a new label putting the actual date in service instead of the calibration date as it sat for 11 months. The auditor freaks out because the date on the cert doesn't match the date on the set. How are other companies handling this? Thanks for any help.