When items are found to be unsatisfactory during inspection, what should be marked on the record?

The correct marking to indicate unsatisfactory items during an inspection is an "X." This symbol clearly communicates that the item does not meet the required standards or specifications and ideally calls for further action or rectification. Using an "X" is a straightforward visual cue that can be easily recognized and understood by those reviewing the inspection record.

In contrast, other options such as "Approved," "Noted," or "OK" would not convey the appropriate level of concern regarding the unsatisfactory condition found during the inspection. Those phrases suggest that an item meets requirements or has been acknowledged without indicating any issues, which could lead to confusion or oversight in addressing necessary changes or repairs. Therefore, marking an unsatisfactory item with an "X" serves as an effective alert for immediate attention and resolution.