1.Calibration and use of measuring instruments-Vernier caliper,Vernier height gauge and Micrometer

Vernier Caliper:The Vernier caliper is a tool used to measure the external and internal dimensions, as well as depths of objects. It consists of a main scale and a sliding Vernier scale, allowing measurements with high precision
Vernier Height Gauge:The Vernier height gauge is used to measure the height of objects or the vertical distance from a reference surface (typically a surface plate). It uses a Vernier scale to give precise readings of height
Micrometer:A micrometer is a precision instrument used to measure small dimensions with high accuracy, such as the thickness or diameter of a wire, or the outer diameter of a part