Fowler Stainless Steel Ultra-Cal V Electronic Caliper, 54-100-067-1, 6" Maximum Measurement, 0.0005"/.01mm Resolution Measures 0 to 6"/0 to 150mm with 0.001"/0.02mm accuracy, and 0.0005"/0.01mm resolution for precise measurements Hardened stainless steel frame for corrosion resistance and long life Digital, single-value readout LCD shows inch or metric units for versatility when measuring Absolute and relative modes to take intermediate or differential measurements Certified to IP 67 level of protection against dust and short periods of immersion in water, lifetime warranty offered by Fowler High Precision, an American company