English: A Vernier caliper is a precision measuring instrument used for accurate measurement of linear dimensions. It consists of a main scale and a sliding Vernier scale, which enables more precise readings than a standard ruler. The caliper typically has jaws for measuring both external and internal dimensions. The main scale is fixed, while the Vernier scale slides along it. To take a measurement, one closes the jaws around the object, reads the main scale, aligns the zero on the Vernier scale, and adds the Vernier scale reading to the main scale reading for the final measurement. Vernier calipers are widely employed in engineering, physics, and manufacturing for their ability to provide precise measurements.

English: Vernier Caliper