Which tool measures the depth of an item?

The depth gauge is specifically designed to measure the depth of holes or recesses, making it the most suitable tool for this purpose. It typically features a finely calibrated arm that can extend into the depth of an object, providing precise measurements. This tool is particularly useful in various fields such as woodworking, metalworking, and engineering where accurate depth measurements are essential for the quality and fit of components.

While the micrometer, tape measure, and calipers can measure dimensions, they are not specialized for measuring depth in the same way that a depth gauge is. A micrometer is primarily focused on measuring the thickness or diameter of objects with high precision but is not ideal for depth measurements. A tape measure is versatile for measuring long distances but lacks the precision needed for small, specific depth measurements. Calipers can measure internal and external dimensions as well as depth to some extent, but they are not as specialized or accurate in depth measurement compared to a dedicated depth gauge.