Features 1、The ruler body is made of all‑plastic carbon fiber material, with a comfortable feel and accurate testing 2、The caliper has LED liquid crystal display, the response is faster and more accurate 3、The product uses 1.5v battery which is more stable and durable, long service life 4、The ruler adopts magnetic stripe film scale process, which can provide accurate readings 5、The measuring range is 0‑100mm,with a storage box which is convenient to carry Specification Item Type: Digital Caliper Material: Full Plastic Carbon Fiber Scale Process: Magnetic stripe film Display: LCD display Range: Approx. 0 ~ 100mm / 0 ~ 3.9in Unit: mm/in Resolution: Approx. 0.1mm Accuracy: Approx. ±0.1mm Battery Model: LR44 1.5V, 165mAH Package List 1 x Caliper 1 x Battery 1 x Plastic Box