The Olsa Tools Digital Caliper Measuring Tool, No. 1589, features a large LCD screen to easily read measurements quickly and accurately. By the use of one button, users can easily switch between three measuring units: millimeters, inches, and fractional inches. Its high-resolution, internal digital sensor provides precise measurements down to +/-0.01mm. Made from hardened stainless steel, the tool offers precision-ground jaws for ideal parallelism and an all-metal construction for strength and durability. It also features a depth gauge, step gauge, zero button, thumbwheel, locking screw, and measuring jaws for inside measurements.