A three-dimensional collar shape retaining hanger prevents collars of a plurality of garments from being crushed and is capable of being stacked in a large number. The system includes first and second movable sections connected and controlled by an adjustment locking mechanisms. The fluid carrying conduits link the oxygen source to diseased sites within the patient’s lungs. An eye vector corresponding to the cutting reference point is set with a photographing viewpoint of the distorted image as a base point. The magnetic-field induced torque is proportional to the rotational angle of the mirror, which is proportional to VA-VB. As a result, when this BHT photomask is used to make a three-dimensional microscopic structure, it is possible to produce a smoother and more linear profile on the object being made.