Features Higher Accuracy: Supports Easy Switching Between Metric And British Systems, The Caliper Has 0-150mm Measuring Range And High Accuracy. Digital Display: Powered By The Built in Battery, The Vernier Caliper Enables Clear Digital Display to Largely Simplify Your Operation. Extensive Using: Allows for Wide Application in The Measurement of Length, Depth, Inner Diameter, Outer Diameter And So on, Very Useful. Better Material: Mainly Made from Premium Abs Material with A Sturdy Structure, Not Likely to Deform And Durable for Long Term Using. Easy Carrying: Designed to Have A Compact And A Light Weight As Well, The Caliper Tool Also Has A Storage Box for Convenient Carrying. Specification: Item Type: Vernier Caliper Product Material: ABS Measuring Range: Approx. 0 ~ 150mm / 0 ~ 5.91in Measurement Accuracy: ± 0.02mm Backup Battery: 1 x LR44 180mAh button battery, shipped with the battery. Power Supply Battery: 1 x LR44 180mAh button battery, shipped with built in battery.  Package List: 1 x Vernier Caliper 1 x Button Battery 1 x Storage Box Package List 1 x Vernier Caliper 1 x Button Battery 1 x Storage Box