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 15 - Surveying (including photogrammetrical surveying), hydrographic, oceanographic Commodity Code Description 90 15 10 90 15 20 90 15 30 90 15 40 90 15 80 90 15 90