This tool kit is made of fine quality metal, high precision, easy to use and maintain, and is a good helper in life production. Features: Simple structure, easy to use and maintain. High sensitivity, stable and reliable in accuracy. Made of fine quality materials, easy to use and read. Long service life of gears and racks to prevent indicator failure due to shock or wear. Dial indicator is used to measure shaft runout, shaft thrust, gear backlash. Universal magnetic base holder is widely used in machining, workpiece measurement, equipment calibration, etc. Can be used with the leverage dial indicator and small correction meter. Powerful magnetic base, with on/off switch for magnet. With high stability, it will be your ideal tool in the measurement of precision workpiece field. Flexible, strong, the precise rotary joints can be adjusted any direction and location. The V-slot base can be mounted on a cylindrical surface. Specifications: Material: metal+zinc alloy Main color: silver+red Dial indicator: Accuracy: 0.01mm Measuring range: 0-10mm / 0-0.4in Dial diameter: 54mm / 2.1in Weight: 140g / 4.9oz Universal magnetic base holder: Clamping hole diameter: 8mm / 0.3in Total height: 195mm / 7.7in Rod length: 155mm / 6.1in Base size: 36 * 35 * 30mm / 1.4 * 1.4 * 1.2in Package size: 270 * 100 * 80mm / 10.6 * 3.9 * 3.1in Package weight: 537g / 1.2lb Package list: 1 * 0.01mm Accuracy Dial Indicator 1 * Universal Magnetic Base Holder