The difference between an accurate test reading and a thoroughly inaccurate reading can be whether the equipment was calibrated or not. Custom calibration labels are available from Nevs Ink to always ensure that a timely calibration has occurred with equipment. Custom calibration labels can either note that one must check a couple of things to make sure the equipment is calibrated, that the equipment is already calibrated and is ready for use, or that the equipment has not been calibrated and should not be used. In order to help in the enforcement of a regular calibration check routine, custom calibration labels can be filled in with information such as the date a calibration was last done and who the technician was that did the last calibration check.