An eddy current system that includes automatic marking of defective areas primarily allows you to:

An eddy current system that includes automatic marking of defective areas provides a significant advantage in the inspection process by enabling the identification and potential removal of defects from the product. When defects are marked automatically, it allows operators to easily locate and focus on these problem areas for remedial actions. This capability is important in manufacturing and quality control settings, as it ensures that defects can be addressed promptly without the need for excessive manual inspection, thus improving efficiency and product quality.

The ability to remove defective areas adds further value, especially in contexts where the integrity of the final product is crucial. By clearly marking and allowing for the exclusion or repair of these defects, manufacturers can maintain higher standards of quality while simultaneously reducing waste and rework. In essence, marking defective areas facilitates a more streamlined process for quality assurance.

In relation to the other options, while passing rejectable material, eliminating surface contamination, or establishing defect causes are important aspects of quality control, the primary function of an automatic marking system is centered on identifying and addressing those identified defects in the product.