.020 Percent, High Side Compatible With 316 Stainless Steel, Fitting Material Stainless Steel, For Use With Fluke Calibrators, NIST Traceable Calibration Certificate, Includes Adapters, Certificate of Calibration, Manufacturers Warranty Length 3 yr.Pressure Module, Reference, Pressure Range -12 to 100 psi (-80 to 700 KPa), Vacuum -12 psi, Total Uncertainty 0.