|
| 3312 | Abrasion testing machines, manufacturing | |
| 3312 | Acceleration indicators and systems components, aerospace type, manufacturing | |
| 3312 | Accelerometers (except aerospace type), manufacturing | |
| 3312 | Acidity (i.e., pH) instruments, laboratory analysis type, manufacturing | |
| 3312 | Actinometers, meteorological, manufacturing | |
| 3312 | Aeronautical navigational systems, electronic, manufacturing | |
| 3312 | Aeronautical systems and instruments (except electronic navigational), manufacturing | |
| 3312 | Aeronautical systems and instruments, electronic navigational, manufacturing | |
| 3312 | Aeronautical systems and instruments, manufacturing | |
| 3312 | Air flow controllers (except valves), air-conditioning and refrigeration, manufacturing | |
| 3312 | Air traffic control radar systems and equipment, manufacturing | |
| 3312 | Airborne navigational systems, manufacturing | |
| 3312 | Aircraft electrical equipment repair (except radio) | |
| 3312 | Aircraft engine instruments, manufacturing | |
| 3312 | Aircraft flight instrument repair (except electrical) | |
| 3312 | Aircraft flight instruments (except engine instruments), manufacturing | |
| 3312 | Airframe equipment instruments, manufacturing | |
| 3312 | Airspeed instruments (aeronautical), manufacturing | |
| 3312 | Alidades, surveying, manufacturing | |
| 3312 | Alignment equipment, motor vehicle wheel, manufacturing | |
| 3312 | Alternator and generator testers, manufacturing | |
| 3312 | Altimeters, aeronautical, manufacturing | |
| 3312 | Amino acid analyzers, laboratory type, manufacturing | |
| 3312 | Ampere-hour meters, manufacturing | |
| 3312 | Analyzers for testing electrical characteristics, manufacturing | |
| 3312 | Anemometers, manufacturing | |
| 3312 | Angle-of-attack instrumentation, manufacturing | |
| 3312 | Angle-of-yaw instrumentation, manufacturing | |
| 3312 | Appliance controls, manufacturing | |
| 3312 | Appliance regulators (except switches), manufacturing | |
| 3312 | Artificial horizon instrumentation, manufacturing | |
| 3312 | Audio-frequency oscillators, manufacturing | |
| 3312 | Audiometers (except medical), manufacturing | |
| 3312 | Audiometers, manufacturing | |
| 3312 | Automatic chemical analyzers, laboratory type, manufacturing | |
| 3312 | Automatic environmental controls and regulators (e.g., heating, air-conditioning, refrigeration), manufacturing | |
| 3312 | Automotive emissions testing equipment, manufacturing | |
| 3312 | Automotive engine, electrical diagnostic equipment, manufacturing | |
| 3312 | Balances and scales, laboratory type, manufacturing | |
| 3312 | Balancing equipment (except wheels), manufacturing | |