?Precise Accurate?Kynup digital caliper has a measurement range of 0 - 6''/ 0 - 150 mm; 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 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 ?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 ?Splash Proof Stainless Steel Material?The Splash Proof micrometer is constructed of first-class STAINLESS STEEL, Splash Proof, anti-rust, which has a strong frame with lockable head. The housing is made of metal with silver paint on the surface.