Which tool is specifically mentioned for measuring tread depth during an inspection?

The tread depth gauge is specifically designed for measuring the depth of tire tread, which is a crucial part of vehicle safety inspections. Maintaining adequate tread depth is essential for ensuring proper traction and handling on the road, especially in adverse weather conditions. The gauge typically features a simple mechanism that allows inspectors to quickly and accurately measure how much tread is left on a tire.

Tools like measuring tapes and calipers might be useful for other dimensions, but they lack the specific design and increments needed for accurately assessing tire tread depth. A micrometer, while precise, is generally intended for measuring smaller dimensions with high accuracy and isn't practical for the larger scale of tire tread measurements. Therefore, the tread depth gauge stands out as the suitable tool tailored for this specific purpose during inspections.