The BOPT is an open box made by plastics which is complemented by two completely removable plastic-moduls (upper abdomen and little pelvis).
The interior of the base modul is enlightened by five halogen spotlights. The base modul conforms in dimension, size and direction to the human abdominal cavity by an enlargement of the factor 1.2 till 1.3.
The construction maded up of plastics is sturdy and free of twistings because of the stucked and welded components. A laminatd foam panel serves the fixing of the brought in practicing preparations.