Calibration Weight Kit Nominal Mass 500g to 20mg Calibration Weight Class 1 Calibration Certificate Accredited Calibration Weight Style Cylinder and Leaf Calibration Weight Material Alloy 8 Stainless Steel Measurement Type Metric Includes 500g 50g 20mg Weights Carry Case Number of Pieces 3 Finish Polished Calibration Weight Compliance Agency ANSI ASTM