laboris tehtava mõõtevahendi kalibreerimise aruanne, mis täpselt, selgelt ja ühemõtteliselt esitab katsetulemused ja muu vajaliku info, documented proof that the equipment was maintained and calibrated, and if found to be out of calibration what was done to correct it, kalibreerimisega seotud materjalide kogum mistahes kujul – registrid, protokollid, töövihikud, arvuti salvestus jne, calibration procedures and forms used by technical services in the monitoring and measuring instruments process