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 01 Optical fibres and cables; polarising material; lenses, etc, unmounted.... 90 01 10 Optical fibres, optical fibre bundles and cables 90 01 10 00 Optical fibres, optical fibre bundles and cables Commodity Code Description 90 01 10 00 000 Optical fibres, optical fibre bundles and cables