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 31 MEASURING OR CHECKING INSTRUMENTS, APPLIANCES AND MACHINES, 90 31 80 OTHER INSTRUMENTS, APPLIANCES AND MACHINES N.E.S/INCL. IN CH.90;PROFILE... Commodity Code Description 90 31 80 00 OTHER INSTRUMENTS, APPLIANCES AND MACHINES N.E.S/INCL. IN CH.90;PROFILE...