The Sperry VisionMaster Radar Systems Trackerball 65900614 3E is an advanced control device used to operate Sperry Marine’s radar systems. The trackerball allows operators to smoothly navigate through radar data, adjusting settings and viewing modes with precision. It provides a more intuitive and responsive alternative to traditional input devices like a mouse or keyboard. The trackerball’s ergonomic design ensures comfort during long periods of operation, and its reliable performance makes it an essential tool for radar operators. It is particularly valuable in high-stress situations where quick adjustments are needed.