Eddy Current Testing or Electromagnetic Testing

To meet ISO 17025 requirements, the testing laboratory must label, code or identify in some way that allows the user of the equipment to identify the calibration status or period of validity. As long as this is very clear to the user, there is no mandatory need to have a sticker placed by the third party calibration laboratory. The relevant documention (calibration certifcate) must also be available to the user.

For more information see What does ISO 17025:2017 require for laboratory measurement equipment and related procedures? at https://advisera.com/17025academy/blog/2019/07/25/iso-17025-measurement-requirements-of-the-standard/