The precise internal mechanical structure makes it highly sensitive and precise in operation, with a measurement range of 0-3mm and a graduation value of 0.01mm, indicating high measurement accuracy. The 3 straight , 3 curved , 2 test bars, clamping drive shaft, etc. allows for flexible operation at angles from horizontal to vertical, expanding usage methods and scope. When the machine tool spindle rotates, the of the indicator can remain stationary in any desired position, allowing you to freely and accurately position the workbench with both hands, improving work efficiency and accuracy. The 7.3Inch length, 1.76 lbs , and the dedicated wooden box with soft protective lining effortless carrying and convenient storage while protecting the product from ordinary impacts. It can be used for boring and milling settings on horizontal or vertical machine tools, to quickly and accurately center the workpiece or fixed device on the grinder. The centering dial test indicator is a measuring tool using the lever to mit 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 fabricating machineries. Round Edge: The smooth and burr-free edge after fine processes can better care for your skin, providing you with a comfortable user experience. Clear Gauge: The clear scales and numbers on the large dial and the clear cover easy to read the meter, bringing more convenience to your work. Complete Accessories: This set includes 1 gauge, 6 probes, 2 test bars, and 2 wrenches, which are sufficient to handle centering tasks. Measurement Range: 0-3mm/0-0.12in Graduation Value: 0.01mm Product Length: 18.5cm/7.3in Box Size: 22x12.3x6.5cm/8.7x4.8x2.6in Colour:As Shown Material:Metal Package Contents: 1 * Centering Indicator 6 * 2 * Test Bars 2 * wrench 1 * Box Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.