1、Polished surface enables smooth operation and precise measurement, easy to use. 2、Made of high quality material, carbon steel, sturdy and durable, have a long service time. 3、Compact, portable and suitable for outdoor operation, easy and convenient to use and carry. 4、With excellent production technology, have good corrosion resistance and is not easy to rust. 5、Have a nice appearance with the simple but elegant design, suitable for machining, measuring the inner diameter. Item Type: Vernier Caliper Material: Carbon steel Measuring Range: Approx. 0 - 300mm / 0 - 11.8in Reading Value: 0.02mm Display Mode: Mechanical cursor reading Purpose: Measuring inner diameter Application Scope: Machining, measuring the inner diameter and groove of the inner hole 1 x Vernier Caliper 1 x Storage Box