we offer Electronic Column Gauge. Twin Channel Dual Display bar graph and Six Digi Display.Absolute Comparative MeasurementRS 232 OutputStatic Dynamic ReadingMode Max, Min, Avg, tir.Metric Inch ReadingsSingle Tri Colour LED for component status.(Red-Reject, Green Ok, Yellow-Rework).Tolerance Indicator Pointer.Tri colour bar craft available.Tri-Colour Column availableAuto Calibration Facility.Single Double Master Calibration Facility.