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 11 Compound optical microscopes, including those for photomicrography, cinephotomic 90 11 90 Parts and accessories 90 11 90 00 Parts and accessories Commodity Code Description 90 11 90 00 00 Parts and accessories