| 90 | Optical instruments and apparatus, photographic, cinematographic, measuring, checking, precision, medical or surgical; parts and accessories |
| 9031 | Measuring or checking instruments, appliances and machines elsewhere in this chapter not specified or included; profile projectors |
| 903190 | Parts and accessories measuring or checking instruments, appliances and machines, included elsewhere in this group has not specified or included |
| 9031908500 | Parts and accessories, other |