[Highest Quality Standard] Finely polished stainless steel frame caliper with knurled roller and locking screw to ensure smoothness and accurate position during use. Using hardened process, no rust, more durable, longer service life [Accurate Measurement] 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. king size With 4 measuring functions, inner diameter, outer diameter, depth and scale [Extra Large LCD Display] Digital caliper with a large, easy-to-read LCD display that makes reading the results clearer. Readings can be displayed in inches or millimeters. dustproof and oilproof [Versatility]This professional digital caliper measures;inside,;outside, depth and step with two sets of jaws and the probe; With the zero button, we can reset the value during measurement to have more flexibility;use [Bonus] Digital