Dual-Range Piston Cylinder System with Automated Range Changing Capability High Long-Term Stability with Recommended Recalibration Cycle Every Five Years 0.015% Standard Accuracy. 0.006% Premium Accuracy Available Gives Extremely Good Sensitivity for High Accuracy Calibration and it is Rugged Enough for Regular Use in a Workshop Environment Factory Standard Calibration Report. Traceability to National Standards Calibration, such as UKAS or DKD/DAkkS Available.