Calibration Weight Nominal Mass 1 kg Calibration Weight Class Ultra Calibration Certificate No Certificate Calibration Weight Style Cylinder Calibration Weight Material Alloy 8 Stainless Steel Measurement Type Metric Includes Case Number of Pieces 1 Finish Polished Calibration Weight Compliance Agency ANSI ASTM Overall Height 2.936 in Overall Width 2.1 in Calibration Tolerance 1.3 mg