Section 18 Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; clocks and watches; musical instruments; parts and accessories thereof 90 Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof 90 10 Apparatus and equipment for photographic (including cinematographic) laboratories, not specified or included elsewhere in this Chapter; negatoscopes; projection screens. Commodity Code Description 90 10 10 Apparatus and equipment for automatically developing photographic (inclu. ...)..., 90 10 50 Apparatus and equipment for automatically developing photographic (inclu. ...)..., 90 10 60 Projection screens 90 10 90 Parts and accessories