Section 18 OPTICAL, PHOTOGRAPHIC, CINEMATOGRAPHIC, MEASURING, CHECKING, PRECISION, MEDICAL OR SURGICAL INSTRUMENTS AND APPARATUS; CLOCKS AND WATCHES; MUSICAL INSTRUMENTS; PARTS AND ACCESSORIES THEREOF 90 OPTICAL, PHOTOGRAGHIC, CINEMATOGRAPHIC, MEASURING, CHECKING, PRECISION, MEDICAL OR SURGICAL INSTRUMENTS AND APPARATUS; CLOCKS AND WATCHES; MUSICAL INSTRUMENTS; PARTS AND ACCESSORIES THEREOF 90 28 GAS, LIQUID OR ELECTRICITY SUPPLY OR PRODUCTION METERS, INCLUDING 90 28 90 PARTS AND ACCESSORIES FOR GAS/LIQUID/ELECTRCITY SUPPLY/PRODUCTION METERS Commodity Code Description 90 28 90 00 PARTS AND ACCESSORIES FOR GAS/LIQUID/ELECTRCITY SUPPLY/PRODUCTION METERS