【Highest Quality Standards】Vernier caliper with finely polished stainless steel frame, knurled roller and locking screw to ensure smoothness and precise position during use. Using a tempering process, rustproof, more durable, longer service life. 【Accurate Measurement】The digital caliper measures up to 6"/150 mm with an accuracy of 0.01 mm. This allows you to zero and start a new measurement at any point on the scale and instantly convert between inches/millimeters with the touch of a button. With 4 measurement functions, inside diameter, outside diameter, depth and scale. 【Extra Large LCD Display】Digital caliper with a large, easy-to-read LCD display that makes reading results clearer. Readings can be displayed in inches or millimeters. Dustproof and oilproof. 【Versatility】This professional digital caliper measures the inside, outside, depth and step with two sets of jaws and the probe; with the zero button, we can reset the value during measurement for greater flexibility of use.