| Tariff Classification |
| section 18 | 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 |
| 90.11 | Compound optical microscopes, including those for photomicrography, cinephotomicrography or microprojection: |
| 9011.20 | －Other microscopes, for photomicrography, cinephotomicrography or microprojection |
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