Product name: Dial IndicatorMeasuring range: 0-10mm/0-30mmResolution: 0.01mmFeatures: The accuracy of the dial indicator is 0.01mm, which can more accurately measure the concentricity of the main body. The scale is clear, and the reading is intuitive and convenient. High-quality stainless steel measuring probe, rust-proof and wear-resistant.Product name: Leverage Dial IndicatorMeasuring range: 0-0.8mmResolution: 0.01mmFeatures: The measuring probe of the lever dial indicator can be adjusted 240° at will. The measuring probe is made of alloy tungsten steel. Accessories combination: shaft sleeve φ6mm, φ8mm.Product name: Magnetic Base Holder A/B TypeClamping diameter: aperture 8mm + dovetail grooveScope of application: It is widely used in machining, workpiece measurement, equipment calibration, etc., and can be used with dial indicators, lever dial indicators, small calibration instruments, etc.Features: Powerful magnetic base holder with magnet switch. The flexible and sturdy rotary joint can adjust the direction and position arbitrarily. The V-groove base can be installed on a cylindrical surface.Type A/B difference: Type B magnetic base holder has stronger magnetism, and the nut is made of metal. The B-type magnetic base holder has more powerful advantages in terms of stability and safety.Precautions:1) The base color of the magnetic stand base is shipped randomly, this is not a way to distinguish the magnetic stand base.2) All dimensions appearing in the description are manually measured, and there may be an error of 1-3mm. This is normal, please don't mind.3) Since the package will reach the buyer through long-distance transportation, there are big transportation problems in the middle. If the product in your hand is damaged, please contact the seller in time, and you will surely get a satisfactory answer.