A depth micrometer is a precision measuring tool used to determine the depth of holes, slots, or recesses in various materials. It typically features a calibrated scale and a micrometer screw, allowing for accurate measurements down to a fraction of a millimeter. This tool is essential in fields like engineering and manufacturing, where precise dimensions are crucial. The design of a depth micrometer often includes a flat base and a measuring rod that extends into the hole being measured. Users can easily read the depth by observing the position of the rod against the scale. This tool is commonly used alongside other measuring instruments, such as calipers and gauges, to ensure overall accuracy in measurements.