An edge finder is a handy tool in machining, particularly in milling operations. Its primary purpose is to precisely locate the edges of a workpiece or the center of a hole. It works by being mounted in the spindle of the milling machine and brought into contact with the edge or surface being located. When the edge finder makes contact, it shifts slightly off-center, indicating the exact location. This helps machinists align their cutting tools accurately, ensuring that they begin machining at the correct position, thus improving precision and reducing errors in the manufacturing process. Includes four edge finders: EF-130, EF-132, EF-133, and EF-134, providing versatility for various milling tasks. Each edge finder is specifically designed to tackle different applications, ensuring you have the right tool for the job.