Calibration Weight Nominal Mass 1 lb Calibration Weight Class 7 Calibration Certificate Traceable - Accredited Calibration Weight Style Grip Handle Calibration Weight Material Cast Iron Measurement Type Avoirdupois Number of Pieces 1 Finish Painted Calibration Weight Compliance Agency ASTM Overall Height 1.19 in Overall Length 2.5 in Overall Width 1.62 in Calibration Tolerance 270 mg