Feeler Gauges, Vernier Calipers -Edge Finder Machinist Measuring Tool Highlights Generic Brand Edge Finder Machinist Measuring Tool Description: Hardened and Ground Probe; No need to turn during measurement. The LED instantly lights up and beeps when the probe touches a conductive part. A safety spring puller that returns the ball precisely to the position where the ball breaks free from the ball seat It helps locate the working edge quickly and saves time when finding positions on milling machines, straightening machines, etc. Using a highly sensitive location sensor and using a clearly visible red indicator light and beeping sound The location of the end surface, outer and inner diameters of the circle can be detected. specification: Material: stainless steel Total length: 160mm Measuring range: 0-10mm/0.4inch Accuracy: 0.02-0.01mm Battery: 2*1.5V battery (not included) Package includes: 1 piece Edge Finder