An adjusting device, a device for directing manufacturing aids including an adjusting device, and a gripper device having an adjusting device. The adjusting device includes a body and an adjustment plate mounted on the body for rotation about a central axis. The adjustment plate has two guide slots distributed around the circumference for adjustment objects mounted on the body so as to be pivotable about tangential pivot axes, wherein centerlines of the guide slots extend about the central axis along a spiral path.