FIELD: test engineering. SUBSTANCE: device for three-dimensional checking quality of hollow articles moved along circular trajectory has circular conveyer, means for giving to hollow articles rotary motion around their axis during passing provided region of circular trajectory which has at least single illuminating device provided with light source and reflecting unit which has photoelectric converter and mirrors mounted motionless. The mirrors are mounted for shift t an angle which provides simultaneous embrace of total circular control region under testing. The mirrors direct light to photoelectric converter. Such a design provides simultaneous advancing of several partial patterns in a single row to photoelectric converter. Number of sections and number of partial patterns correspond to number of mirrors. EFFECT: improved reliability of quality control; simplified design. 10 cl, 6 dwg
