Micrometer calibration involves verifying and adjusting the accuracy of micrometers—precision measuring instruments used to measure small dimensions with high accuracy. The process includes inspecting the micrometer for wear or damage, cleaning the spindle and anvil surfaces, and comparing measurements against certified gauge blocks or reference standards at multiple points across its range. Any deviations are recorded, and adjustments are made if necessary to restore accuracy. Regular micrometer calibration ensures reliable and repeatable measurements in manufacturing, machining, and quality-control processes, supports compliance with industry standards, and provides traceable documentation for quality assurance and inspection purposes.