Measuring Range: 200mm (8") / Resolution: 0.01mm (0.0005") / Accuracy: 0.03mm (0.001") Hardened Stainless Steel / mm/inch conversion / zero setting at any point Auto on & off / Remembers Position when turned off (Reference Caliper) Power: 1.5V LR44 Button Cell (2 x LR44 Cells Supplied) / Battery Life: 2 Years Under Average Usage Supplied by Digital Micrometers Ltd with 12 Months Warranty & Support, Weight: 0.3968320716 Pounds, Manufacturer: Digital Micrometers Ltd