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 30 Oscilloscopes, spectrum analysers and other instruments and apparatus for measur Commodity Code Description 90 30 10 90 30 20 90 30 31 90 30 32 90 30 33 90 30 39 90 30 40 90 30 82 90 30 84 90 30 89 90 30 90