| 334515 |
Watt-hour and time switch meters, combined, manufacturing |
| 334515 |
Watt-hour meters, electric, manufacturing |
| 334515 |
Wattmeters manufacturing |
| 334515 |
Waveform measuring and/or analyzing equipment manufacturing |
| 334515 |
Wheatstone bridges (i.e., electrical measuring instruments) manufacturing |
| 334515 |
X-Y recorders (i.e., plotters (except computer peripheral equipment)) manufacturing |
| 334516 |
Acidity (i.e., pH) measuring equipment, laboratory analysis-type, manufacturing |
| 334516 |
Amino acid analyzers, laboratory-type, manufacturing |
| 334516 |
Atomic force microscopes manufacturing |
| 334516 |
Automatic chemical analyzers, laboratory-type, manufacturing |