| 9804.00.15 | | Professional books, implements, instruments and tools of trade, occupation or employment (not including theatrical scenery, properties or apparel, and not including articles for use in any manufacturing establishment, for any other person or for sale), owned and used by him abroad | | Free | | Free |
| 9810.00.60 | 00 | Instruments and apparatus, if no instrument or apparatus of equivalent scientific value for the purposes for which the instrument or apparatus is intended to be used is being manufactured in the United States (see U.S. note 6 to this subchapter) | X | Free | | Free |
| 9810.00.65 | 00 | Repair components for instruments or apparatus admitted under subheading 9810.00.60 | X | Free | | Free |
| 9810.00.67 | 00 | Tools specially designed to be used for the maintenance, checking, gauging or repair of instruments or apparatus admitted under subheading 9810.00.60 | X | Free | | Free |
