| 2007 NAICS | 2012 NAICS | 2017 NAICS | Corresponding Index Entries | |||
| 334515 | 334515 | 334515 | Alternator and generator testers manufacturing | |||
| 334515 | 334515 | 334515 | Ampere-hour meters manufacturing | |||
| 334515 | 334515 | 334515 | Analyzers for testing electrical characteristics manufacturing | |||
| 334515 | 334515 | 334515 | Audiofrequency oscillators manufacturing | |||
| 334515 | 334515 | 334515 | Audiometers (except medical) manufacturing | |||
| 334515 | 334515 | 334515 | Automotive ammeters and voltmeters manufacturing | |||
| 334515 | 334515 | 334515 | Automotive electrical engine diagnostic equipment manufacturing | |||
| 334515 | 334515 | 334515 | Battery testers, electrical, manufacturing | |||
| 334515 | 334515 | 334515 | Bridges, electrical (e.g., Kelvin, megohm, vacuum tube, Wheatstone), manufacturing | |||
| 334515 | 334515 | 334515 | Circuit testers manufacturing | |||
| 334515 | 334515 | 334515 | Communications signal testing and evaluation equipment manufacturing | |||
| 334515 | 334515 | 334515 | Current measuring equipment manufacturing | |||
| 334515 | 334515 | 334515 | Decade boxes (i.e., capacitance, inductance, resistance) manufacturing | |||
| 334515 | 334515 | 334515 | Demand meters, electric, manufacturing | |||
| 334515 | 334515 | 334515 | Digital panel meters, electricity measuring, manufacturing | |||
| 334515 | 334515 | 334515 | Digital test equipment (e.g., electronic and electrical circuits and equipment testing) manufacturing | |||
| 334515 | 334515 | 334515 | Diode and transistor testers manufacturing | |||
| 334515 | 334515 | 334515 | Distortion meters and analyzers manufacturing | |||
| 334515 | 334515 | 334515 | Elapsed time meters, electronic, manufacturing | |||
| 334515 | 334515 | 334515 | Electrical network analyzers manufacturing | |||
| 334515 | 334515 | 334515 | Electrical power measuring equipment manufacturing | |||
| 334515 | 334515 | 334515 | Electricity and electrical signal measuring instruments manufacturing | |||
| 334515 | 334515 | 334515 | Electricity and electrical signal testing equipment manufacturing | |||
| 334515 | 334515 | 334515 | Electron tube test equipment manufacturing | |||
| 334515 | 334515 | 334515 | Electronic test equipment for testing electrical characteristics manufacturing | |||
| 334515 | 334515 | 334515 | Energy measuring equipment, electrical, manufacturing | |||
| 334515 | 334515 | 334515 | Field strength and intensity measuring equipment, electrical, manufacturing | |||
| 334515 | 334515 | 334515 | Frequency meters (e.g., electrical, electronic, mechanical) manufacturing | |||
| 334515 | 334515 | 334515 | Frequency synthesizers manufacturing | |||
| 334515 | 334515 | 334515 | Function generators manufacturing | |||
| 334515 | 334515 | 334515 | Galvanometers (except geophysical) manufacturing | |||
| 334515 | 334515 | 334515 | Graphic recording meters, electric, manufacturing | |||
| 334515 | 334515 | 334515 | Ignition testing instruments manufacturing | |||
| 334515 | 334515 | 334515 | Impedance measuring equipment manufacturing | |||
| 334515 | 334515 | 334515 | Indicating instruments, electric, manufacturing | |||
| 334515 | 334515 | 334515 | Instrument shunts manufacturing | |||
| 334515 | 334515 | 334515 | Instruments for measuring electrical quantities manufacturing | |||
| 334515 | 334515 | 334515 | Instruments, electric (i.e., testing electrical characteristics), manufacturing | |||
| 334515 | 334515 | 334515 | Integrated-circuit testers manufacturing | |||
| 334515 | 334515 | 334515 | Integrating electricity meters manufacturing | |||
| 334515 | 334515 | 334515 | Internal combustion engine analyzers (i.e., testing electrical characteristics) manufacturing | |||
| 334515 | 334515 | 334515 | Kelvin bridges (i.e., electrical measuring instruments) manufacturing | |||
| 334515 | 334515 | 334515 | Laboratory standards testing instruments (e.g., capacitance, electrical resistance, inductance) manufacturing | |||
| 334515 | 334515 | 334515 | Logic circuit testers manufacturing | |||
| 334515 | 334515 | 334515 | Measuring equipment for electronic and electrical circuits and equipment manufacturing | |||
| 334515 | 334515 | 334515 | Measuring instruments and meters, electric, manufacturing | |||
| 334515 | 334515 | 334515 | Meters, electrical (i.e., graphic recording, panelboard, pocket, portable), manufacturing | |||
| 334515 | 334515 | 334515 | Meters, power factor and phase angle, manufacturing | |||
| 334515 | 334515 | 334515 | Microwave test equipment manufacturing | |||
| 334515 | 334515 | 334515 | Multimeters manufacturing | |||
| 334515 | 334515 | 334515 | Ohmmeters manufacturing | |||
| 334515 | 334515 | 334515 | Oscillators (e.g., instrument type audiofrequency and radiofrequency) manufacturing | |||
| 334515 | 334515 | 334515 | Oscilloscopes manufacturing | |||
| 334515 | 334515 | 334515 | Phase angle meters manufacturing | |||
| 334515 | 334515 | 334515 | Portable test meters manufacturing | |||
| 334515 | 334515 | 334515 | Potentiometric instruments (except industrial process-type) manufacturing | |||
| 334515 | 334515 | 334515 | Power factor meters manufacturing | |||
| 334515 | 334515 | 334515 | Power measuring equipment, electrical, manufacturing | |||
| 334515 | 334515 | 334515 | Pulse (i.e., signal) generators manufacturing | |||
| 334515 | 334515 | 334515 | Radar testing instruments, electric, manufacturing | |||
| 334515 | 334515 | 334515 | Radiofrequency measuring equipment manufacturing | |||
| 334515 | 334515 | 334515 | Radiofrequency oscillators manufacturing | |||
| 334515 | 334515 | 334515 | Recorders, oscillographic, manufacturing | |||
| 334515 | 334515 | 334515 | Relays (except electrical, electronic), instrument, manufacturing | |||
| 334515 | 334515 | 334515 | Resistance measuring equipment manufacturing | |||
| 334515 | 334515 | 334515 | Semiconductor test equipment manufacturing | |||
| 334515 | 334515 | 334515 | Shunts, instrument, manufacturing | |||
| 334515 | 334515 | 334515 | Signal generators and averagers manufacturing | |||
| 334515 | 334515 | 334515 | Spark plug testing instruments, electric, manufacturing | |||
| 334515 | 334515 | 334515 | Spectrum analyzers manufacturing | |||
| 334515 | 334515 | 334515 | Standards and calibration equipment for electrical measuring manufacturing | |||
| 334515 | 334515 | 334515 | Standing wave ratio measuring equipment manufacturing | |||
| 334515 | 334515 | 334515 | Stroboscopes manufacturing | |||
| 334515 | 334515 | 334515 | Sweep generators manufacturing | |||
| 334515 | 334515 | 334515 | Sweep oscillators manufacturing | |||
| 334515 | 334515 | 334515 | Synchroscopes manufacturing | |||
| 334515 | 334515 | 334515 | Tachometer generators manufacturing | |||
| 334515 | 334515 | 334515 | Test equipment for electronic and electrical circuits and equipment manufacturing | |||
| 334515 | 334515 | 334515 | Test sets, ignition harness, manufacturing | |||
| 334515 | 334515 | 334515 | Voltmeters manufacturing | |||
| 334515 | 334515 | 334515 | Watt-hour and demand meters, combined, manufacturing | |||
| 334515 | 334515 | 334515 | Watt-hour and time switch meters, combined, manufacturing | |||
| 334515 | 334515 | 334515 | Watt-hour meters, electric, manufacturing | |||
| 334515 | 334515 | 334515 | Wattmeters manufacturing | |||
| 334515 | 334515 | 334515 | Waveform measuring and/or analyzing equipment manufacturing | |||
| 334515 | 334515 | 334515 | Wheatstone bridges (i.e., electrical measuring instruments) manufacturing | |||
| 334515 | 334515 | 334515 | X-Y recorders (i.e., plotters (except computer peripheral equipment)) manufacturing |