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 22 USES, INCLUDING RADIOGRAPHY OR RADIOTHERAPHY APPARATUS, X-RAY TUBES AND 90 22 29 APP. USING ALPHA,BETA,GAMMA RADIATIONS, FOR OTHER USES 90 22 29 00 APP. USING ALPHA,BETA,GAMMA RADIATIONS, FOR OTHER USES Commodity Code Description 90 22 29 00 000 APP. USING ALPHA,BETA,GAMMA RADIATIONS, FOR OTHER USES