Height gauges are precision measuring devices used to determine the height of an object, and are typically used in the metalworking industry. A digital caliper is designed to measure the inside and outside areas of an object, and features an LCD display. A digital vernier caliper can measure internal and external distances with extreme accuracy, such as the inside and outside dimensions of a pipe. It features a rule and a sliding jaw, and like other digital calipers, also features an LCD display. For more minute and precise measurements, a digital micrometer can take accurate measurements to 0.0005 inches and 0.001 mm.