Mitutoyo 050102, Edge Finder, 1/2" Dia. Shank, .200" Dia. Tip Go to amazon.com Related posts The 6 best edge finder machinist 2022 FeatureUsed in a milling machine to find the workpiece edgeAll working surfaces are hardened and ground DescriptionMitutoyo Edge Finder, Shank Dia: 1/2", Tip Dia: .200".