A Vernier Caliper is a precision measuring instrument used to measure the dimensions of an object, such as length, width, and depth. It consists of a main scale and a sliding scale, known as the Vernier scale, which allows for more accurate measurements than a standard ruler. The device can measure both internal and external dimensions, making it versatile for various applications in fields like engineering and woodworking. To use a Vernier Caliper, the user places the object between the jaws of the caliper and reads the measurement from the main scale and the Vernier scale. The difference between the two scales provides a precise measurement, typically to the nearest 0.01 mm or 0.001 inches. This tool is essential for tasks requiring high accuracy, such as in laboratories and manufacturing settings.