Insize Dial Bore Gauge 2322 series is a precision instrument designed to measure the diameter of external or internal pipes, rods and other cylindrical objects. This extremely accurate dial bore gauge comes with a 0.01 mm resolution and an accuracy level of 0.003 mm over its measuring range. It is made from stainless steel, and its dial face has increased readability due to its polished surface. The contact point of this model is SR2, which ensures excellent mechanical contact between the calipers and the surface being measured for accuracy and protection from damage to both objects during measurement.