Name: Plastic high precision Electronic digital display vernier caliperHead material: ABS plasticRuler material: PA66 high strength plasticStyle: Range 0-100mmResolution: 0.1mmError value: 0.2mmBattery: LR44/SR44 1.5V button batteryApplicable measurement: Outer diameter, inner diameter, inner hole, etc.Features:1.Large LCD display, clear data display, easy reading2.With metric conversion, arbitrary zero function3.Open the boot, automatically shut down4.Carbon fiber material does not rust permanently, preventing scratching jewelryCaliper calibration:1.The initial reading may not be accurate and you need to gently close the jaws of the caliper2.Press the ZERO green button on the caliper to zero the readingPrecautions:1.Use lightly when using a caliper2.Keep away from the environment with electronic interference, avoid reading errorsReplacement battery:1.Find the button battery compartment2.Push the battery compartment cover from left to right to open the battery compartment3.Open the battery compartment cover, remove the old battery, replace the new batteryPackage includes:1* Caliper