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 Surgicla Instruments and Apparatus; parts and AccesoriesThereof. 90 11 Compound optical microscopes, including those for photomicrography, cinephotomicrography or microprojection 90 11 10 STEREOSCOPIC MICROSCOPES Commodity Code Description 90 11 10 00 STEREOSCOPIC MICROSCOPES