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, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof 90 28 Gas, liquid or electricity supply or production meters.... 90 28 10 Gas meters 90 28 10 00 Gas meters Commodity Code Description 90 28 10 00 000 Gas meters
