The centering dial test indicator is a new measuring tool using the lever to transmit the relative position of the workpiece center to the dial indicator and convert it into pointer-angular displacement. It is an accurate, easy, and visible tool to find out the relative center such as the excircle and inner bore of the processed workpiece in the machining of various fabricating machineries. SpecificationsColor: BlueMaterial: Metal, PlasticMeasurement Range: 0-3mm/0-0.12inGraduation Value: 0.01mmNumber of Items: 1Gross Weight: 0.8kg/1.76 lbsProduct Length: 18.5cm/7.3inBox Size: 22*12.3*6.5cm/8.7*4.8*2.6inPackage Size: 22*13*6cm/8.7*5.12*2.36inPackage Included1*Centering Indicator6*Feelers 2*Test Bars2*Wreches1*Wooden Box1*English Manual NotesPlease allow the slight color difference caused by the shooting light and 1-3cm error due to manual measurement, and make sure you do not mind before you order.