Fowler 2-3"/50-75mm Xtra-Value Digi-Micrometer 54-815-003-2 Protected to IP54 specifications. Rugged steel design Large LCD Display Absolute & incremental modes Automatic switch off Resolution: .00005"/.001mm Carbide measuring faces Sizes over 1"/25mm include standard Range: 2-3/50-75mmAccuracy: ± 0.0002"Resolution: 0.00005/.001mm