Section 18 OPTICAL, PHOTOGRAPHIC, CINEMATOGRAPHIC, MEASURING, CHECKING, PRECISION , MEDICAL OR SURGICAL INSTRUMENTS AND APPARATUS; CLOCKS AND WATCHES; M USICAL INSTRUMENTS; PARTS AND ACCESSORIES THEREOF 90 Optical, photographic, cinematographic measuring, checking, precision, medical o 90 06 Photographic (other than cinematographic) cameras; photographic flashlight appar 90 06 51 90 06 51 00 Commodity Code Description 90 06 51 00 00 -- With a through-the-lens viewfinder (single lens reflex (SLR)), for roll film of a wid