| 334519 |
Humidity instruments (except industrial process and air-conditioning type) manufacturing |
| 334519 |
Hydrometers (except industrial process-type) manufacturing |
| 334519 |
Hygrometers (except industrial process-type) manufacturing |
| 334519 |
Hygrothermographs manufacturing |
| 334519 |
Indicator testers, turntable, manufacturing |
| 334519 |
Instrumentation for reactor controls, auxiliary, manufacturing |
| 334519 |
Ion chambers manufacturing |
| 334519 |
Kinematic test and measuring equipment manufacturing |
| 334519 |
Leak detectors, water, manufacturing |
| 334519 |
Level gauges, radiation-type, manufacturing |