Large Measuring Range Accurate ScaleThe digital caliper has a measuring range of 012 inches or 0300 mm, with an accuracy of 0.02 mm0.001 inches. Quickly switch between inch and millimeter measurement modes with one key, no need for separate conversion Selected Stainless Steel MaterialThe calipers are made of selected stainless steel, waterproof and stainresistant, 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 MeasurementThis 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 Autooff Function Large LCD displayThe 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 ApplicationThis 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