Features 1、Convenient unit conversion operation, one‑key quick switch between three measurement modes: inch, fraction, and millimeter. 2、Knurled thumb roller ensures smooth sliding and accurate positioning when taking measurements. 3、It is usually used in manufacturing inspections to provide accurate measurement of objects. 4、Storage case included for better protection and storage of your caliper in your tool collection. 5、The digital reading LED display is more convenient and clear, providing versatility during measurement. Specification Item Type: Vernier Caliper Material: Steel Color: As shown in the picture Specification: 0-300mm Accuracy: 0.01mm Measuring Speed: ≤1.5/s Storage Temperature: -10℃~+70℃ Working Humidity: <80% Battery Type: Button battery Battery Model: 1.5v LR44 silver oxide battery Battery Capacity: 160mAh (Included) Number of Batteries: 2 Package List 1 x Vernier Caliper 2 x LR44 Silver Oxide Battery 1 x Carry Box 1 x Instruction Manual