Fowler 54-200-888-1 Stainless Steel Pro-Max Electronic Caliper, Direct RS-232 Output, 0-8" Measuring Range, 0.0005" Repeatability, 0.001" Maximum Error Accuracy of 0.001"/0.02mm with 0.0005"/0.01mm resolution, with 0.0005" repeatability for precise measurements Hardened stainless steel frame for corrosion resistance and long life Digital, single-value readout LCD shows inch and 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