Instructions: Step1 Clear The Measuring Surface Is Close To The Flat Surface, Push The Measuring Rod To The End, Press The Zreo Reset Button, And It Will Display 0.00. Step2 Measurement The Measuring Surface Is Close To The Tire Tread Vertically, And The Measuring Rod Is Inserted Into The Bottom Of The Pattern Groove To Display The Measured Value Tips: It Is Recommended To Test Several Times And Take The Average Value Product Features: 1.Inch, Mm Unit Conversion Packing List: Measuring Ruler + Button Battery*1.
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