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, me Thereof. 90 18 Instruments and appliances used in medical, surgical, dental or veterinary sciences, including scintigraphic apparatus, other electromedical apparatus and sight-testing instruments Commodity Code Description 90 18 11 - - Electro-cardiographs 90 18 12 - - Ultrasonic scanning apparatus 90 18 13 - - Magnetic resonance imaging apparatus 90 18 14 - - Scintigraphic apparatus 90 18 19 - - Other 90 18 20 - Ultra-violet or infra-red ray apparatus 90 18 31 - - Syringes, with or without needles 90 18 32 - - Tubular metal needles and needles for sutures 90 18 39 - - Other 90 18 41 - - Dental drill engines, whether or not combined on a single base with other dental equipment 90 18 49 - - Other 90 18 50 - Other ophthalmic instruments and appliances 90 18 90 - Other instruments and appliances