This set includes two vernier calipers, which are precision measuring instruments used to measure the dimensions of an object with a high degree of accuracy. The calipers shown in the image appear to be made of stainless steel, ensuring durability and resistance to rust. Each caliper features a sliding scale and a locking screw, which allows the user to fix the measurement securely. The clear engraved markings on the tool improve readability and precision. Ideal for professionals and hobbyists who require accurate measurements in their work, these calipers are a versatile addition to any toolkit.