Precise measurement: Measuring range : 0-6inch/0-150mm; Precision : 0.2mm/0.01inch; Resolution : 0.01 inch/0.1 mm. Perfect and accurate caliper measuring tool for home/jewelry measuring/DIY measuring, please take note. Not suitable for technical level professionals with extreme precision. Two unit conversions: When used, EZT digital calipers can be freely switched between two units (inches and millimeters). The switching function of the two units can meet different needs. More convenient and widely used for user measurement. 4 Measuring Modes & Safety]: The digital caliper can be used for external measurement, internal measurement, depth measurement and step measurement. The plastic caliper pins are made of plastic, so there is no short circuit when measuring the battery or contacting the positive and negative electrodes. Safety is superior to metal stirrups. Large LCD Display & Gift: High-quality digital calipers, large, easy-to-read LCD display can help you get accurate results quickly and easily, digital calipers open automatically when you slide the rails and when they are not in place the use stops automatically. Comes with batteries, pre-installed batteries and spare batteries as a gift.