Precision-; Calipers has a measurement range of 0 - 150 mm/0-6; accuracy to 0.001/0.02mm and resolution to 0.0005"/0.01mm. Perfect and accurate caliper measuring tool for household or DIY measurement. Please choose stainless steel digital caliper for more accurate measuring. 3 Units Conversion- You can switch 3 units with the digital calipers: inch, mm and fraction based on your habits with the push of a button. Press the on/off button, slide the digital caliper to anywhere, then you can read the values on the display. And you can reset it to zero by zero button. 4 Measuring Ways- Caliper measuring tool comes with two sets of jaws and a probe, which are easy to measure depth, step, external and internal diameter, making all your objects measurable. 3 batteries are provided: one installed and other two as spare batteries Rest Assured Quality- The body of the stainless steel digital caliper is constructed using finely polished stainless steel with a knurled thumb roller and locking screw that ensures smooth sliding and accurate positioning when taking measurements. Wide Application ; Auto Off- The 6 inch caliper micrometer is always used by professionals and hobbyists alike, by jewelers, hobbyists, woodworkers, DIY. Auto shutdown for saving battery after within 6 minutes if without operation