Chasles’s (“shawls”) theorem gives that every rigid body displacement is equivalent to a displacement named for these devices. Robert Ball employed six-dimensional vectors named for these devices in his framework of their mechanics. The Burgers vector is parallel to the dislocation line of a type of crystal dislocation named for these devices. These devices name a line that is simultaneously a body’s (*) axis of rotation and path of translational motion. The movement of these devices is restricted by self-locking. “Two pi times radius over length” gives the ideal mechanical advantage of these devices. These devices consist of an inclined plane wrapped around a cylinder. For 10 points, name these simple machines that can be driven by drills. ■END■ (10[1])