Water resistant and durable, this rechargeable digital caliper can measure inside, outside, depth and step measurements up to 6 inches/150mm with a resolution of 0.0005" (0.01mm), accuracy of 0.001" (0.02mm). It has an extra large, easy to read tri-mode digital display - switches between inches, millimeters and fractions at the touch of a button. Additionally, it can wirelessly send data right to your computer or handheld device in the form of a text document!