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 06 Photographic (other than cinematographic) cameras; photographic flashlight apparatus and flashbulbs other than discharge lamps of heading 85.39. 90 06 51 With a through-the len viewfinder (single lens reflex (SLR),...not exceeding 35mm Commodity Code Description 90 06 51 00 With a through-the len viewfinder (single lens reflex (SLR),...not exceeding 35mm