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 25 Hydrometers... thermometers, pyrometers, barometers, hygrometers... Commodity Code Description 90 25 11 Liquid-filled, for direct reading 90 25 19 Other thermometers and pyrometers not combined with other instruments 90 25 80 Other instruments 90 25 90 Parts and accessories
