Features Precision Measurement Capability - Achieve an impressive accuracy of within 0.005mm for repeat measurements, ensuring reliable results for all your machining tasks Versatile Compatibility - Perfectly suited for traditional milling machines and comprehensive processing machines, making it an essential tool for various applications Optimized for Speed - Designed to work effectively at rotating speeds of 400-600rpm, enhancing efficiency in your machining operations Specialized Probe Design - Features a 4mm probe specifically engineered to measure small apertures and narrow grooves, providing versatility in intricate workpieces Durable Anti-Magnetic Construction - The lower end's rotary part incorporates an anti-magnetic design, preventing interference and ensuring smooth operation during use Features: 1、Suitable for traditional milling machine and comprehensive procing machine 2、Use with 400-600rpm rotating speed. 3、The mechanical rotary measurement has no clamping error, and the repeated measurement accuracy can reach within 0.005mm. 4、Specially designed 4mm probe for measuring small aperture and narrow groove. 5、Anti-magnetic design is adopted for the rotary part of the lower end. Specification: Features: Suitable for traditional milling machine and comprehensive procing machine Use with 400-600rpm rotating speed. The mechanical rotary measurement has no clamping error, and the repeated measurement accuracy can reach within 0.005mm. Specially designed 4mm probe for measuring small aperture and narrow groove. Anti-magnetic design is adopted for the rotary part of the lower end. Specification: Name: mechanical edge finder Material: carbon steel Size Large end: 20mm / 0.8in Small end:10mm / 0.4in Total length: 90mm / 3.5in Package list: 1 x Mechanical Edge Finder 1 x box Package List 1 x Mechanical Edge Finder 1 x box