Husky 6 in. 3-Mode Digital Fractional Caliper High-contrast, 3-mode digital display easily switches between inches, millimeters and fractions with guaranteed accuracy to 0.001 in. Inside, outside, depth and step measurements Durable, stainless steel construction Bar scale features etched, black graduations in inches and millimeters Accuracy: +/- 0.001 in. +/- 0.02 mm