Chucks with simultaneously-acting jaws, whether or not also individually adjustable pivotally movable in planes containing the axis of the chuck {moving first parallel to the axis then pivotally in planes containing the axis of the chuck}
Chucks with simultaneously-acting jaws, whether or not also individually adjustable pivotally movable in planes containing the axis of the chuck {moving first parallel to the axis then pivotally in planes containing the axis of the chuck}