Profile: W+S Measuring Systems Ltd specializes in manufacturing optical encoders. Our product range includes incremental, absolute, multiturn, EX & IP, commutation and special encoders. Our incremental encoder relates to sensors used to record positional changes (linear or rotating) that can measure both the distance and direction of travel. They are also known as optical encoders. These feature a solid measure with a repeating periodic counting track. The measurement is based on a directional reference and a count. Commutation encoders are used in electrical motors.