Features 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 One magnetic base It can used for Dial indicator and Lever dial indicator etcDesigned with three joints Easy using for metalwork pieces There is On Off switch on the base Specifications Base Size L x W x H Approx 60 x 50 x 55mmTotal Height Approx 350mmClamping Hole Diameter Approx 8mmMaterial Metal Package included 1 x Universal Magnetic Base StandDetails pictures