Calibration Weight Nominal Mass 5 lb Calibration Weight Class 7 Calibration Certificate Traceable - Accredited Calibration Weight Style Slotted Calibration Weight Material Cast Iron Measurement Type Avoirdupois Number of Pieces 1 Finish Painted Calibration Weight Compliance Agency ASTM Overall Height 1.3 in Overall Length 5.12 in Calibration Tolerance 760 mg