ProTek RC 6"" Digital Calipers feature a high-contrast LCD display, stainless steel construction and guaranteed accuracy to 0.001""/0.02mm, making them a must have for any enthusiasts tool box! The tool delivers accurate readings of inside, outside, step and depth measurements that are useful in a variety of applications. Additionally, a plastic storage case is included to keep the tool safe during storage, and two LR44 batteries are included so that you don't need to find another battery when the first one dies! Features: Corrosion resistant stainless steel Convenient auto-off feature Dual mode LCD display - Inches and Metric Inside, outside, depth & step measurements Accuracy: +/- 0.001"" +/- 0.02mm Power Source: 1 LR44/SR44 battery (two included) (PTK-8290)