Potentiometer

Potentiometric displacement sensor is used for direct or non-direct, precise measurement of mechanical displacement. Potentiometers have high resolution to conduct linear or angular motion displacements and they always operate with a sliding contact system.
Potentiometers allow changes in the resistance in a circuit and functioning as a variable voltage divider. Potentiometer is commonly used in research laboratories, industrial processing, and robotics as well as on medical, construction and agriculture equipment for various control purposes.

Potentiometer Overview