Highest Quality StandardVernier caliper finely polished stainless steel frame with knurled roller and locking screw to ensure smoothness and precise position during use. Using a hardened process, no rust, more durable, longer life Precise MeasurementDigital caliper measures up to 6"/150mm with 0.01mm accuracy This allows you to zero and start a new measurement at any point on the scale and instantly convert between inches/millimeters at the touch of a button king size With 4 measurement functions, inside diameter, diameter Outside, Depth and Scale Extra Large LCD DisplayDigital caliper with a large easy-to-read LCD display that makes reading results clearer.Readings can be displayed in inch or millimeter format. Dustproof and Oilproof VersatilityThis professional digital caliper measures inside, outside, depth and pitch with two sets of jaws and the probe; With the zero button, we can reset the value during the measurement to have more flexibility of use BonusDigital caliper is equipped with a LR44, 1.5V button battery and comes with a extra button battery. This caliper is CE certified. Digital gauges equipped with an automatic on/off function, so your battery won't run out on arrival. Home and professional use is highly recommended Outer Diameter / Inner Diameter Quickly measure any object within 15mm with a sharp jaw larger Length Versatile measuring options include depth function for small objects that are difficult to reach with ordinary rulers Depth The meter's unattended tilt feature also allows the use of meter reverse. The numbers on the screen represent the depth