Digital calipers are ideal for measuring the capacity of a bore, shaft and a variety of standard holes. It comes with two measuring jaws: a fixed one (for depth measurements) and an adjustable one (for internal diameter measurements). It comes with a protective pouch too. SUNTALKON Digital Vernier Caliper 1108-150 Standard Model is a high precision measuring instrument which is used to make highly accurate internal, external and step measurements with an electronic digital readout. It is designed with an LCD screen and it has a stainless steel upper jaw and frame design which makes it durable and accurate. Insize Digital Vernier Caliper 1108-150 is an easy-to-use digital gauge that measures the length, depth, step and inside diameter of round workpieces. It offers audible feedback for consistency with data displayed on a large LCD screen in inches or millimetres. The calliper has a maximum reading of 150 mm, giving you the most accurate result. This product is used for dimension measurement.