The automated folding machine produces on its own and the CoBo-Stack robot sets down the folded signatures. What has been missing up to now for end-to-end automated finishing processes is self-sufficient fold quality control. The VT50 fold quality control system is unique on the market. Monitoring takes place directly behind the folding machine. Two cameras measure the folding tolerances of the folded sheets. These tolerances can be set by the customer to fit the specific job.