Section 18 OPTICAL, PHOTOGRAPHIC, CINEMATOGRAPHIC, MEASURING, CHECKING, PRECISION , MEDICAL OR SURGICAL INSTRUMENTS AND APPARATUS; CLOCKS AND WATCHES; M USICAL INSTRUMENTS; PARTS AND ACCESSORIES THEREOF 91 Clocks and watches and parts thereof 91 06 Time of day recording apparatus and apparatus for measuring, recording or otherw 91 06 10 91 06 10 00 Commodity Code Description 91 06 10 00 00 - Time-registers; time-recorders 91 06 90 00 00 - Other