... Optical edge finder We supply edge finder with led lamp, edge finder with led lamp and beep sound, and also other kinds. In addition, ... we also supply the following products: For more details, please kindly visit our website.Machanical Edge Finder Model ... 90mm, shank Dia. 10mm, measuring bar Dia. 10+4mmEdge Finder with LED Lamp & Beep Sound Model NoSpecificationJM-EF003point 10mm, ...