A Check Card provides a clear overview of potential defects and their frequency of occurrence. The data is based on the examiner’s own observations. This tool from quality management helps in identifying defects and their causes. Possible defects are categorized, and the Check Card also includes information about the product or process being examined for defects, the examiner, and the testing procedure. Each individual defect that occurs is marked with a tally. Summing up the results afterward allows conclusions to be drawn about the origins of the problem causes and helps in selecting further analyses.