Model Number:RL-0254DP :Metalworking Measuring Range:0-25.4mm/0-1 inch Resolution:0.01mm/0.0005 inch Battery:1x CR2032 3V(include) Working Temp:0-40 Degrees Celsius Storage Temperature:-20-70 Degrees Celsius Relative Humidity:Less than equal 80% Code:F01619OEB120801J System of Measurement:Fraction/Metric/Inch Application: Designed to facilitate quick and easy reading of tire tread depth wear. Suitable for automobile cars motorcycles trucks caravans SUV tire repair. 3 kinds of Units Display: Our tire depth gauge has 50 x 17mm big screen Metric fraction inch,accurate , easy to operate. Fine Workmanship:Mini size hand-held and portable,made of ABS plastic,light weight How To Use: 1.insert the battrey; 2.Swith ON; 3.Put base on flat and press bar downward; 4.Set Zero; 5.Put gauge on tyre,hold stable and press bar tip wear, ,atmospheric appearance Base length (mm): 60mm Colour: silver Material: metal Package Contents: 1 x Digital depth gauge Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.