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For most continuous web manufacturers, determining the accurate length for each step of the process can be a real challenge. When a roll of raw material is converted into finished goods, it is critical to know how much product there is in each roll that is shipped. It is also important to know at all times how much product is left on the unwinding roll to ensure complete sets of finished rolls. Encoder issues, and stretch and shrinkage in the substrate can cause substantial inaccuracies in roll length. RYECO offers the Length and Position Control System that uses evenly spaced code marks on a web that provides users with 100% accurate length and position information in any processed roll. The system also provides functionality for automatic stopping for sets or known defects and can display web stretch and shrinkage in real time.