| 334519 |
Sextants, surveying, manufacturing |
| 334519 |
Solarimeters manufacturing |
| 334519 |
Spectrometers (e.g., liquid scintillation, nuclear) manufacturing |
| 334519 |
Springs, clock and watch, made from purchased wire |
| 334519 |
Surveying instruments manufacturing |
| 334519 |
Tapes, surveyor's, manufacturing |
| 334519 |
Templates, drafting, manufacturing |
| 334519 |
Tensile strength testing equipment manufacturing |
| 334519 |
Testers for checking hydraulic controls on aircraft manufacturing |
| 334519 |
Testing equipment (e.g., abrasion, shearing strength, tensile strength, torsion) manufacturing |