?Large Measuring Range Accurate Scale?The digital caliper has a measuring range of 0-12 inches or 0-300 mm, with an accuracy of 0.02 mm/0.001 inches. Quickly switch between inch and millimeter measurement modes with one key, no need for separate conversion ?Selected Stainless Steel Material?The calipers are made of selected stainless steel, waterproof and stain-resistant, more stronger than traditional plastic digital calipers, with knurled thumb rollers and locking screws to ensure smooth sliding and accurate positioning when measuring ?4 Types of Measurement?This caliper measuring tool has four types of measurement, you can use the two sets of jaws and a probe configured to measure depth, step, outer diameter, and inner diameter, suitable for most measurement scenarios. In addition, the vernier caliper comes with a black portable and sturdy case for easy storage, pressure, and shock resistance ?Specific Auto-off Function Large LCD display?The screen size is large and stable, and the numbers can be read clearly and correctly. If there is no use, it will automatically take off within a few minutes to save battery power ?Wide Application?This caliper comes with a ruler, a screwdriver, two batteries, a wider range of applications, suitable for most measurement scenarios, loved by professionals and amateurs, is the best choice for mechanics, woodworkers, jewelers, craftsmen, amateurs, DIY, auto mechanics, etc ?TIPS?: Due to the upgrade testing stage of the caliper,caliper battery covers are screwed. This will not affect your use, and it will be more convenient for your storage