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, PHOTOGRAGHIC, CINEMATOGRAPHIC, MEASURING, CHECKING, PRECISION, MEDICAL OR SURGICAL INSTRUMENTS AND APPARATUS; CLOCKS AND WATCHES; MUSICAL INSTRUMENTS; PARTS AND ACCESSORIES THEREOF 90 25 HYDROMETERS AND SIMILAR FLOATING INSTRUMENTS, THERMOMETRES, PROMETERS, 90 25 19 OTHER THERMOMETERS & PYROMETERS, NOT COMBINED WITH OTHER INSTRUMENTS Commodity Code Description 90 25 19 00 OTHER THERMOMETERS & PYROMETERS, NOT COMBINED WITH OTHER INSTRUMENTS