Feature Unique point: The photoelectric edge finder has the characteristic of measuring without turning. Wide Application: This high-precision mechanical edge finder is suitable for use on conventional milling machines and integrated processing machines. Practical tool: This photoelectric mechanical edge finder can measure the X and Y axis coordinates of the workpiece. Easy to use: When you touch the edge finder probe to the workpiece, there will be a red light and a beep. Note: This edge finder is an electronic product. Try to avoid short circuit or corrosion caused by cutting fluid entering inside. Specification: Name: edge finder Material: main body stainless steel Color: silver Size: as shown Battery: 2pcs 1.5V battery Weight: about 168g Package list: 1 x edge finder 1 x manual in English 1 x box Note: To ensure measurement accuracy, do not directly touch the probe with your hands. If not used for a long time, please remove the battery to extend battery life. If the battery power is insufficient, please replace immediately the same type of battery. This edge detector is an electronic product. It should avoid short circuit or corrosion caused by cutting fluid entering inside.