Getting to know the accurate speed and length of sheet materials is essential to optimize the cost and process, as well as process reliability. Laser Surface Velocimeters (LSV) from Polytec are optical length and speed sensors that exceed the performance of conventional contact-based measurement techniques such as encoder wheels and provide several benefits. Process Control with Laser Precision LSVs have been installed in thousands of locations across the world, supporting rolling mill products and steel, metallurgical plants, as well as aluminum and metals production with precision laser measurements. Moreover, Polytec sensors improve process control and material usage while producing paper and packaging, textiles and films, cables and wires, as well as construction materials and wood products.