90.31Heading
Measuring or checking instruments, appliances and machines, n.e.c. or included in this chapter; profile projectors
Section XVIII — Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; clocks and watches; musical instruments; parts and accessories thereof
| Code | Description |
|---|---|
| 9031.10 | Machines; for balancing mechanical parts |
| 9031.20 | Test benches |
| 9031.41 | Optical instruments and appliances; for inspecting semiconductor wafers or devices or for inspecting photomasks or reticles used in manufacturing semiconductor devices, n.e.c. in chapter 90 |
| 9031.49 | Optical instruments and appliances; for measuring or checking, n.e.c. in chapter 90 |
| 9031.80 | Instruments, appliances and machines; for measuring or checking n.e.c. in chapter 90 |
| 9031.90 | Instruments, appliances and machines; parts and accessories for those measuring or checking devices of heading no. 9031 |