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 11 Compound optical microscopes,incl. photomicrography,..... Commodity Code Description 90 11 10 Sterescopic microscopes 90 11 20 Other microscopes, for photomicrograhy, cinephotomicrography or microprojection 90 11 80 Other microscpoes 90 11 90 Parts and accessories of compound optical microscopes