Features: - Accuracy: 0.005mm - Quickly locates workpiece edges - Probe is hardened and precision ground - No rotation required during measurement - LED lights up instantly and beeps when probe contacts conductive material - Equipped with a safety spring mechanism that returns the ball precisely to position if dislodged - Efficiently locates edges and saves time when setting up on milling machines, jig borers, and similar equipment - Features a highly sensitive sensor with a visible red LED indicator and audible beep alert - Capable of detecting end surfaces, outside diameters, and inside diameters Specifications: - Shank Diameter: approximately 20mm - Overall Length: approximately 160mm - Ball Diameter: approximately 10mm - Power Source: 1 x 23A 12V battery (10 x 28.3mm) not included - Head Material: Steel - Cover Material: Iron Package Includes: 1 x Electronic Edge Finder