Calibration Weight Kit, Nominal Mass 500mg to 1mg, Calibration Weight Class 6, Calibration Weight Style Cylinder, Calibration Weight Material Stainless Steel, Measurement Type Metric, Includes (2) 200mg, 100mg, 10mg, 1mg, 20mg, 2mg, 500mg, 50mg, 5mg, Carry Case, Forceps, Number of Pieces 12, Calibration Weight Compliance Agency ANSI, ASTM, NIST, OIML