What is indicated by calibration of a measuring tool?

The calibration of a measuring tool signifies the adjustment that ensures it measures accurately against a known standard. This process is essential in quality control and manufacturing as it allows the tool to produce measurements that reflect true values rather than erroneous ones. By aligning the tool’s readings with recognized standards, manufacturers can maintain consistency and reliability in their measurements, which is crucial for maintaining product quality and meeting specifications.

The other choices, while related to quality management, do not directly pertain to the specific purpose of calibration. Adjusting a process for effectiveness, documenting corrective actions, or plotting averages involves different methodologies and objectives beyond the scope of what calibration inherently aims to achieve. Thus, understanding calibration as the means of achieving measurement accuracy is vital for maintaining quality in manufacturing processes.