Fowler 54-100-444 Sylvac Ultra-Cal Mark IV Water Resistant Electronic Caliper, 0-6" Measuring Range Resolution of 0.0005"/0.01mm 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 65 level of protection against dust and low-pressure water jets