A circumcision clamp for aiding the removal of the foreskin of an adult, human, male penis. The client presents the adaptivity to the user, thereby enabling the user to freely select a desired device among a plurality of devices which conform with the retrieval condition. Each of the plurality of projection optical systems is telecentric on the side of the second surface, and the exposure fields are arranged at different positions in a second direction crossing the first direction. The lower limit of the second range is set so that the total load becomes heavier as the belt tension deviates from the point at which the total load becomes lightest.