Vernier, dial, and digital height gauges are used to determine the height of objects and for marking or scribing items. These measuring tools are used in metalworking or metrology to either set or measure vertical distances, while the pointer may act as a scriber and assist in marking out workpieces. Height gauge control panels have a screen with a keyboard or a touchscreen and are used in conjunction with height gauges to program and control them. Height gauge scribers and probe inserts are the parts of the gauge that make contact with the workpiece. They are commonly used to replace worn or lost parts or to customize a height gauge for specific applications.