What is vernier micrometer?

A vernier micrometer, also known as a micrometer screw gauge, is a precision measuring instrument used to measure small dimensions with high accuracy, typically to the nearest hundredth of a millimeter. It consists of a calibrated screw and a sliding scale (vernier) that allows for precise readings of small linear distances. The micrometer features a circular scale that rotates as the screw is turned, enabling users to measure the thickness of objects, such as wires or sheets, with great detail. Its main applications are found in mechanical engineering, machining, and scientific laboratories.