The CAL6DIGI 6 inch electronic digital calipers has been designed to provide accurate and precise measurements. It features three measuring modes with a one button quick change to alter between inch, fraction and millimeter.Measurement Range: 0 to 6 inches and 0 to 150mm. Accuracy: 0.001 inches / 0.02mm. Resolution: 0.0005 inches / 1/128 inches / 0.01mm.The calipers has a finely polished stainless steel frame featuring a knurled thumb roller and locking screw to ensure accurate positioning and smooth sliding when being used.It’s equipped with two sets of jaws and a probe and is ideal for measuring inside, outside, depth and step.It also features an extra large LCD screen for clear, easy reading and visibility and comes supplied with a durable plastic storage case, one battery and one extra replacement LR44 battery.