What is the function of a depth gauge?

The function of a depth gauge is to measure the depth of holes or slots accurately. This tool is designed to provide precise measurements in situations where conventional measuring instruments may not provide the needed accuracy or accessibility, particularly for deep or narrow recesses. The depth gauge features a flat base that rests on the surface of the workpiece, with a sliding measurement rod that extends into the hole or slot to give an exact reading of its depth. This capability is essential in precision machining, as it ensures that components are machined to the specified depth, which can affect overall fit and function in assemblies. Accurate depth measurement is crucial in many machining operations to meet specifications and tolerances, thereby contributing to the quality and performance of the final product.