SAVE TIME AND MONEY: Do not waste time and money with expensive and complicated devices for measuring the tread depth. With the depth gauge, it only takes a few seconds to check the condition of the tires. Check out and go! HIGH PRECISION: This measuring device measures in steps of 1/10 mm (0.1 mm). EASY TO USE: The dial diameter is 5 cm. The clear and precise reading makes it easy to use. No special experience or skills are required, the meter is suitable for everyone. The color code is easy to read. Cloth bag included: Easy to stow away and transport in a velvet cloth bag WHAT FOR?: We are a small family business and we believe in offering our customers only products that we would use for ourselves - products with high quality materials that we can be used for a long time. The tire rolling depth indicator is all you need to check your vehicle's tire wear. !! Batteries are not required !! This is how we read the color code: Zone 1 (red) - indicates that the tire tread is damaged / worn. The tire needs to be changed. Zone 2 (yellow) - shows the remaining edge profile that the tire will soon have to change Zone 3 (green) - indicates that the tire has a wide profile and the tire can be used safelyHigh precision: the measuring device measures in steps of 1/10 mm (0.1 mm). Fixed thickness - The display has a solid zinc cast body with an acrylic lens Cloth pouch included - Easy to store and carry in the velvet pocket Manual Zeroing - Resetting the meter is very simple and effortless: the pointer points back to 0 (zero) by pushing the rod back by hand or by gently pressing the rod against a flat surface (for example a table) Measuring System - Metric (mm)