Dimensional calibration

is the process of verifying and, if necessary, adjusting measuring instruments—such as calipers, micrometers, dial gauges, and height gauges—to ensure they deliver accurate, reliable, and traceable measurements of physical dimensions including length, width, height, diameter, and angles. The process involves comparing instrument readings against certified reference standards to detect measurement drift and confirm compliance with specified tolerances. Dimensional calibration is essential for maintaining product quality, manufacturing consistency, and regulatory compliance, helping to prevent errors, rework, and non-conforming products.