Raeyco can perform mass calibration on weights. If you use calibration weights to maintain the accuracy of your scales on a regular basis, those weights will eventually deteriorate so they are no longer as accurate as you require. We will verify your weights “as found”. For all new and existing weights that need recalibration, we also offer both Traceable and Calibration Certificates. Our mass calibration laboratory and processes are ISO/IEC 17025 compliant and are capable of providing calibrations from 1.0mg to 30.0kg (0.1 lb to 50.0 lb).