Item: X-r ay Film Ill uminator Desk Type QTY: 21 X-ray Film Illuminator (Viewer). 2 怕呢了 . table top D iff use, uniform, flicker free i llumination Transparent Spring-loaded film Retainers shall grip lightly and firmly without obscuring top edge details Screen shall be recessed into the cabinet to help keep the interior dust f ree and eliminate side light spi ll The fi lm retainers shall alway