The Sperry Marine VMFT Trackball is an input device used to control the radar system. Similar to a mouse, the trackball allows operators to smoothly move the radar cursor, adjust settings, and navigate through radar data with precision. It is commonly used with Sperry Marine’s radar systems to improve user interaction, offering a more intuitive and responsive alternative to traditional mouse-based control. The trackball’s ergonomic design ensures ease of use during long periods of operation, enhancing operational efficiency and comfort.