The sweeper sent to Ahren Elessedil and Ryer Ord Star had a squat cylindrical body on a set of multiple rollers. Its round head looked like the top half of a metal ball resting on heavy springs. Thin short probes stuck out from the head and a pair of fat knobs stuck out of its body on opposite sides, each about the size of a fist. A hatch on its head could emit a beam of light that would display images.
A wheeled base.1Antrax – p 200