Section XVIII — Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; clocks and watches; musical instruments; parts and accessories thereof
Chapter 90 — Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof
Heading 9018 — Instruments and appliances used in medical, surgical, dental or veterinary sciences, including scintigraphic apparatus, other electromedical apparatus and sighttesting instruments.
National subdivision 9018.1 — Electrodiagnostic apparatus (including apparatus for functional exploratory examination or for checking physiological parameters):
Subheading 9018.11 — Electrocardiographs