Torture devices are instruments used to inflict physical or psychological pain on a person. The term 'torture device' can refer to a variety of tools, including the RACK, which is a medieval torture device consisting of a wooden frame with rollers at either end, and the thumbscrew, which is a device used to crush the thumbs or fingers of a person. Thumbscrews are similar to thumbscrews but are designed to be tightened around the thumbs or fingers. All of these devices have been used throughout history to inflict pain and suffering on individuals.