Special Features:

Includes 3 switches with clear waterproof seals and gold plated contacts, protective aluminum cover blue anodized, neoprene sealing gasket, aluminum collar, 2" ball precision ground black plastic high gloss finish, polytetrafluoroethylene sealing ring (white), mounting holes 6-32 thread (x6), software: ms-office

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.