Calibration Weight Nominal Mass 100 x 1 lb Calibration Weight Class 7 Calibration Certificate No Certificate 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 0.62 in Overall Length 4.06 in Calibration Tolerance 270 mg