Digital depth gauges are precision instruments used to measure the depth of holes, grooves, or other surfaces. They provide accurate readings displayed on a digital screen, making it easier for users to obtain measurements compared to traditional mechanical gauges. These tools are commonly used in various fields, including construction, manufacturing, and woodworking. Typically, digital depth gauges feature a probe that extends into the material being measured. The measurement is taken from the base of the gauge to the tip of the probe, and the results are often displayed in millimeters or inches. Many models also include features like memory functions and automatic shut-off to enhance usability.