Mitutoyo: 103-139-10 (103-139.H) 50-75MM O/S Micrometer Economy type with carbide tipped anvils. Enamel Framed. Flatness: 0.6mm for up to 300mm 1.0mm for up to 300 - 500mm Parallelism: 2+(L/100)mm (fraction rounded down). L = maximum measur…View more