The Z-Mike Pro measurement system provides the truth as manufacturers continue to be pushed to produce precision parts more efficiently in a world of increasingly tight tolerances. Its patented optical design and edge-sensing electronics provide precision and excellent repeatability. Automatic compensation maintains accuracy throughout the measurement range and adjusts for thermal expansion outside the laboratory environment. Quick, accurate and repeatable dimensional measurements of outside diameters, inside diameters, ovality, multiple outside diameters, effective cutting diameters, TIR, taper, part positions, etc.