Features: <br>Suitable for traditional milling machine and comprehensive processing machine <br>Use with 400-600rpm rotating speed. <br>The mechanical rotary measurement has no clamping error, and the repeated measurement accuracy can reach within 0.005mm. <br>Specially designed 4mm probe for measuring small aperture and narrow groove. <br>Anti-magnetic design is adopted for the rotary part of the lower end. <br>Specification: <br>Name: mechanical edge finder <br>Material: carbon steel <br>Size <br>Large end: 20mm / 0.8in <br>Small end:10mm / 0.4in <br>Total length: 90mm / 3.5in <br>Package list: <br>1 x Mechanical Edge Finder <br>1 x box<br>1、Suitable for traditional milling machine and comprehensive processing machine <br>2、Use with 400-600rpm rotating speed. <br>3、The mechanical rotary measurement has no clamping error, and the repeated measurement accuracy can reach within 0.005mm. <br>4、Specially designed 4mm probe for measuring small aperture and narrow groove. <br>5、Anti-magnetic design is adopted for the rotary part of the lower end.