Features Large LCD screen Manual feeding on off Zeroing in all positions Metric inch exchange system Easy to use Convenient to carry Long service life Suitable batteries LR44 SR44 1 5V and CR2032 3 0V lithium batterySpecifications Brand AudewMeasuring Range 0 25 4mm 0 1 Resolution 0 01 mmOperating Temperature 0 40℃Power Supply SR44 LR44 1 5V batteryAccuracy ±0 1 mmMaterial ABS plasticWeight 50gFitment Suitable for tire profile depth measurement Important 1 Hold the clear gauge2 No oil or water on the bar3 Remove battery if you do not use it for a long time4 Display flashes when the battery power is low5 An accidental display pad take away battery for 30 secondsPackage Includes 1 x Digital Gauge With a BatteryNote There are no instructions included in this kit If you want to know how to use or install it please contact us by Email We will provide help as much as possible