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. The dial test indicator is designed for taking measurements in machining, layout, and inspection work. A movement and an auto-reversing contact point provide smooth action. Flexible, strong, the precise rotary joints can be adjusted any direction and location.The V-slot base can be mounted on a cylindrical surface. Continuous dials are used for direct readings and usually have a larger measurement range than balanced dials. 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. 100% SERVICE: If you are confused about the quality of the product or have any other questions, you can email us and we will be happy to solve the problem for you.