Explanatory notes
… “optical” dividing heads) but not those which are in themselves essentially optical instruments (for example, … telescopes); calculating machines (heading 84.70); valves or other appliances of heading 84.81; machines and … , however, apply to : (1) Parts or accessories which in themselves constitute articles falling in any particular …Legal note
… “optical” dividing heads) but not those which are in themselves essentially optical instruments (for example, … telescopes); calculating machines (heading 84.70); valves or other appliances of heading 84.81; machines and …