Check your treads with this Traveller Tire Tread Depth Gauge. It's designed for quick, simple use and makes measurements easy to read. Remaining tire tread is shown from 0 to 1 in. in 1/32 in. increments, or from 0 to 25 mm in 1 mm increments. Suitable for cars, trucks and trailers, this tire tread depth gauge helps you keep an eye on your equipment in order to make informed maintenance decisions.