| 334515 |
Oscillators (e.g., instrument type audiofrequency and radiofrequency) manufacturing |
| 334515 |
Oscilloscopes manufacturing |
| 334515 |
Phase angle meters manufacturing |
| 334515 |
Portable test meters manufacturing |
| 334515 |
Potentiometric instruments (except industrial process-type) manufacturing |
| 334515 |
Power factor meters manufacturing |
| 334515 |
Power measuring equipment, electrical, manufacturing |
| 334515 |
Pulse (i.e., signal) generators manufacturing |
| 334515 |
Radar testing instruments, electric, manufacturing |
| 334515 |
Radiofrequency measuring equipment manufacturing |