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 16 Balances of a sensitivity of 5 cg or better, with or without weights. 90 16 00 90 16 00 00 Commodity Code Description 90 16 00 00 00 Balances of a sensitivity of 5 cg or better, with or without weights.