| 33130 | Repair and maintenance of aircraft engine instruments (manufacture) |
| 33130 | Repair and maintenance of automotive emissions testing equipment (manufacture) |
| 33130 | Repair and maintenance of clocks in church towers and the like |
| 33130 | Repair and maintenance of electrocardiographs (manufacture) |
| 33130 | Repair and maintenance of electromedical endoscopic equipment (manufacture) |
| 33130 | Repair and maintenance of electronic equipment for measuring, checking, testing, etc. (manufacture) |
| 33130 | Repair and maintenance of hearing aids (manufacture) |
| 33130 | Repair and maintenance of industrial time measuring instruments and apparatus (manufacture) |
| 33130 | Repair and maintenance of irradiation apparatus (manufacture) |
| 33130 | Repair and maintenance of magnetic resonance imaging equipment (manufacture) |
| 33130 | Repair and maintenance of materials' properties testing and inspection equipment (manufacture) |
| 33130 | Repair and maintenance of medical and surgical equipment and apparatus (manufacture) |
| 33130 | Repair and maintenance of medical ultrasound equipment (manufacture) |
| 33130 | Repair and maintenance of meteorological instruments (manufacture) |
| 33130 | Repair and maintenance of optical precision instruments (manufacture) |
| 33130 | Repair and maintenance of pacemakers (manufacture) |
| 33130 | Repair and maintenance of professional electric appliances (manufacture) |
| 33130 | Repair and maintenance of professional photographic and cinematographic equipment (manufacture) |
| 33130 | Repair and maintenance of radiation detection and monitoring instruments (manufacture) |
| 33130 | Repair and maintenance of surveying instruments (manufacture) |
| 33130 | Repair of binoculars (manufacture) |
| 33130 | Repair of electronic optical equipment (manufacture) |
| 33130 | Repair of electronic transformers (solid state), coils, chokes, and other inductors (manufacture) |
| 33130 | Repair of electronic valves and tubes and other electronic components (manufacture) |
| 33130 | Repair of heads (pickup, recording, read/write, etc.), phonograph needles (manufacturing) |
| 33130 | Repair of laboratory distilling apparatus, centrifuges, ultrasonic cleaning machinery (manufacture) |
| 33130 | Repair of microscopes (manufacture) |
| 33130 | Repair of mine detectors (manufacture) |
| 33130 | Repair of photographic equipment (manufacture) |
| 33130 | Repair of prisms and lenses (manufacture) |
| 33130 | Repair of telescopes (manufacture) |
| 33130 | |