A tyre depth gauge (92regs) is a compact handheld measuring instrument used to determine the remaining tread depth on vehicle tyres. Its primary use is rapid, repeatable checks for legal compliance and safety assessment — for example confirming adherence to the UK minimum tread depth requirement of 1.6 mm — and for routine fleet or workshop inspections where quick decisions about replacement are needed.

This gauge is manufactured from Type 304 stainless steel (18/8), providing good corrosion resistance for regular use in damp or dirty workshop conditions. The instrument features a satin-brushed finish with a laser-etched scale for durable, fade-resistant markings. The measuring probe extends against a calibrated ruler graduated in millimetres and 32nds of an inch, offering a typical measuring range of 0–12 mm with 0.1 mm resolution for precise readings. As a simple mechanical gauge, thread, head and drive types are not applicable.

The design and graduations follow standard metric measurement practice and are suitable for use alongside BS and ISO-based inspection processes in automotive maintenance; the gauge is particularly useful where conformity to UK MOT requirements and general tyre safety guidance must be checked. It is commonly used in vehicle workshops, tyre retailers, fleet maintenance depots, road transport operators, agricultural machinery servicing and motorsport paddocks for rapid wear checks across multiple tyres.

Key benefits include reliable corrosion resistance from the stainless construction, clear permanent markings that maintain legibility over time, and a compact form factor that makes spot checks quick and repeatable. The precise 0.1 mm graduation allows technicians to track wear trends and make informed replacement decisions, while compatibility with both metric and imperial scales ensures utility in mixed-equipment environments.

Duchy Fasteners stocks this Tyre Depth Gauge as single items and in multi-packs to suit workshop and fleet requirements; current availability in various pack sizes and quantities can be confirmed with our sales team or online catalogue.