Special Features:

1this is a bei sensors and motion systems co (cagec 17080) p/n tbs11-400rs-4800-x-34 trackball ruggedized by datametrics; includes a rugged metal outer housing with three pushbutton switches; two operating modes: prompt and incremental stream

Properties:

A device which includes a sphere mounted in a small open-topped box. The sphere is hand-operated by rotating it in a backward, a forward, or a sideway direction while maintaining the device in a fixed location. The movement of the sphere generates a signal which may be used to move a cursor and/or tracking symbol on the face of a display, such as a cathode ray tube; to input data into an electronic system; and/or to control the operation of a system. It may or may not include additional input devices, such as switches or variable resistors.