1 . COMMON CUSTOMS TARIFF - TARIFF HEADINGS - CLASSIFICATION OF GOODS - MACHINES AND APPLIANCES MADE UP OF DIFFERENT COMPONENTS - ' FUNCTIONAL UNIT ' WITHIN THE MEANING OF THE CUSTOMS COOPERATION COUNCIL ' S EXPLANATORY NOTES - DEFINITION 2 . COMMON CUSTOMS TARIFF - TARIFF HEADINGS - ' PARTS ' OR ' ACCESSORIES ' WITHIN THE MEANING OF SUBHEADING 92.13 D - DEFINITION - CLASSIFICATION OF AN APPARATUS DESCRIBED AS A TIMER/TUNER