Weigh with confidence when you calibrate your balance with Calibration Weights from Globe Scientific.Crafted from high-quality, long-lasting stainless steel, our calibration weights come complete with a rugged foamlined plastic storage case, ensuring accurate calibration for years to come.With OIML Class E2, F1, and F2 designations, these calibration weights are the perfect companion to any of the Globe Scientific externally calibrating balances.A Statement of Accuracy comes standard with all Globe Scientific Calibration Weights, or opt for ISO 17025:2017 Calibration performed by an ISO 17025:2017 accredited laboratory.