... diametrical detectionMinimum display1,5,10Accuracy 2,5,10Compensator TypeSingle axis liquid tilt sensorRange ±3'Accuracy±1''Display resolutionAccording to angle display ... .5 secondAngular unit degree,gon,mil Others Level sensitivityPlate level:20''/mm,30''/mm Circular level:8'/2mm Optical plummetImage:Erect Magnification:3X ...