edge finder

optical edgefinders: Part No. D L d Repeatability SIZE OEF-12LA Φ12 100 Φ10 0.005MM 185x70x50 OEF-16L Φ16 100 Φ10 0.005MM 185x70x50 OEF-20LA-S Φ20 100 Φ10 0.005MM 185x70x50 OEF-20LA Φ20 160 Φ10 0.005MM 185x70x50 OEF-20L Φ20 160 Φ10 0.005MM 185x70x50 OEF-3/4LA Φ3/4 100 . 004 0.0002 185x70x50 OEF-3/4L Φ3/4 100 .004 0.0002 185x70x50 Edge finders are simple, effective and accurate tools for locating surfaces. Standard Specification (with audible beep alert):LED Lights Instantly And It Beeps When Probe Touches Conductive WorkPiece Not necessary to rotate while measuring. Quickly locate work edges. Save time to find positions for milling machine, jig borers, and other machine tools. The scope of application includes edge Surface ,inside and high efficiency. There is a safety spring puller which puts The ball precisely back to the position when ball breaks away from ball seat. Accuracy 0.005mm. Use dry batteries to light the red lamp.Um5#, 1.5V x 2pcs(20LA,20L) Fastener battery, AG13/1.5V x 2pcs(20S,6L)