Fowler 1-2"/25-50mm Xtra-Value Digi-Micrometer 54-815-002-2 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: 1-2/25-50mmAccuracy: ± 0.00016"Resolution: 0.00005/.001mm