BEI Precision has been a designer and producer of highly accurate optical encoders and encoder-based motion control systems f ... or space, military, and commercial applications for over 50 years. We provide complete control systems, gimbal systems, actuators and accelerometers where high accuracy, resolution, extreme environments, and high reliability are required. We provide custom designs to meet demanding customer specifications for space, military, and commercial applications. Over 90% of all optical encoders currently flying in space are BEI Precision encoders. read more