Features: and high quality! It is a high-precision measurement tool that can quickly and easily set mechanical spindle and workpiece datum. exact center position: accuracy and reproducibility of competent drilling, milling, boring and grinding jigs, etc. Applies to traditional milling machines and machining centers. With the speed 400-600rpm use. The mechanical rotation measurements, no clamping errors. Specially designed probe 4mm, provide for a small aperture is narrow trench and measured using. The lower end of the rotation part is magnetically shielded. : Suit For: CNC Machine Milling Shank: 10mm Note: 1 Do not use bent edge finder or barely drag, otherwise it will affect the accuracy; 2.Slide face do not adhering foreign matter or dust; 3. In the measurement, the speed can not exceed 600RPM; 4. bias-type edge finder is not suitable for use on horizontal type machines. Material: Metal colour: silver+black Package Contents: 1 x Edge Finder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.