Oshlun MTEC-08 8-Inch Stainless Steel Digital Caliper with Super Large Display 8-inch capacity digital caliper with plastic storage case and instructions Professional grade stainless steel construction Resolution is 0.0005-inch with accuracy to +/- 0.0015-inch and repeatability of 0.0005-inch Perfect for taking accurate outside, inside, depth and step measurements with easy to read LCD display Features a knurled thumb roller, positive lock, precision ground jaws, and built in RS-232 port