Magnetic stand that uses a switchable permanent magnet for convenient mounting onto flat iron or steel surfaces.The arm can be hydraulically locked in any position using the knob on the upright . Useful for holding dial indicators or dial test indicators during alignment operations. .Permanent magnet operation with ON/OFF control. .V-grooved base for secure mounting on cylindrical surfaces. .Ideal for holding lever indicators at any orientation on a machine tool for alignment operations. .Flexible, strong, and precise rotary joints,can adjust any direction and location .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. .Designed with three joints