Product Description Electronic Calipers Made of stainless steel hardened, With data output Packed in plastic box Resolution: 0.01mm/0.0005" Accuracy: +/-0.03mm (0-200mm) +/-0.04mm(200-300mm) 4-way measurement: Outside, inside, depth, step Buttons: Zero setting, metric/inch conversion Power on/off For more details, please kindly visit our website. In addition, we also supply the following products: (1) Measuring Tools------Vernier Calipers, Electronic Digital Calipers, Micrometers, Dial Indicators, Squares, Protractors, Gages, etc (2) Machinery Accessories------Tool Post and Holder, Collects, Chucks, Drill Chucks, Milling Arbors, Sleeves, Vises, Working Tables, etc (3) Cutting Tools------including Drills, End Mills, Milling Cutters, Slitting Saws, Saw Blades, Reamers, Taps & Dies, Tool Bits, Carbide Inserts, etc (4) Machinery------Metal Working Machinery, Woodworking Machinery, Shear Bending and Rolling Machine, etc