The robot was all wires and joints, its six skeletal limbs made of lightweight foamed metal. It was bigger than Lindsay. Its brain and motor were shielded in its torso, behind barrel-like ribs. The forward end held the sensors and two long, jointed pincer arms. A cross-shaped junction of four swiveling limbs sprouted from its aft end, set that way for work in free-fall. It had a rotary spindle tail for drilling.