Description Applicable to the comparison method to measure the workpiece diameter accuracy 0 01mm This series of internal diameter indicator with excellent guide bridge self centering accurate and reliable One end of the measuring head is the movable probe and the other end is the changeable probe which is changed according to the measured aperture Specification Name Dial Bore GaugeModel 581795Color As picturesMaterials SteelRange 50 160mmAccuracy 0 01mmPackage Included 1 X Dial Bore Gauge1 X Guide Bridge6 X Accessories