Metrology is the science of measurement, focusing on the establishment of units, standards, and techniques to ensure accuracy and consistency in measurements. It plays a crucial role in various fields, including science, engineering, and manufacturing, where precise measurements are essential for quality control and research. The field of metrology encompasses different branches, such as dimensional metrology, which deals with the measurement of physical dimensions, and mass metrology, which focuses on weight measurements. Accurate metrology is vital for compliance with regulations and standards, ensuring that products and services meet required specifications.