Description: Used for determining the relative position of the inner and outer centers of the workpiece and the center of the machine tool spindle. It has the care of the shaft rotation, the indicator is always faced with the characteristics of the operator. Centering dial test indicator is mainly to find out the relative position of excircle,incenter and principal axis center of cutter. Its indicating gauge faces operator and is easy to read when its clamping drive shaft rotates. With wooden box, beautiful appearance, with English instructions, simple operation. Specification: Material: Alloy Color: Blue Measuring Range: 0-3mm Graduation: 0.01mm Size: Approx. 140x 40mm/ 5.5x 1.57inch Package Includes: 1 Piece Centering dial test indicator 1 Piece box 1 Piece English manual 9 Pieces Accessories tools Note: The color may have a little difference as display, pls understand. Please allow 1-3mm error due to hand test.