Professional digital caliper：The digital calipers have passed our rigorous testing to ensure more precise accuracy. The measuring range of the digital calipers is 0-150mm, very suitable for use at home, school, workshop, and factory. Versatile digital calipers：Classic digital calipers can easily and accurately measure outer diameter, ID, and depth. It is a tool suitable for daily life, widely used in schools, families, laboratories, and factories. Material：Finely polished stainless steel digital caliper with knurled roller and locking screw to ensure smoothness and accurate position during use. With hardened process, will not rust, more durable, longer service life. These professional calipers are highly polished and will not cut people or objects. Easy to use：Durable and sturdy caliper with smooth, wrinkle-free glide. Convenient to use with one hand without any additional support. No battery required. Contents：Our package includes a box and a gauge. Our calipers are an essential tool