Industry: 3825—Instruments for Measuring and Testing of Electricity and Electrical Signals
Establishments primarily engaged in manufacturing instruments for measuring the characteristics of electricity and electrical signals, such as voltmeters, ammeters, wattmeters, watt-hour meters, demand meters, and equipment for testing the electrical characteristics of electrical, radio, and communication circuits and of internal combustion engines. Establishments primarily engaged in the manufacturing of electronic checkout, monitoring, evaluating, and other electronic support equipment for electronic navigational, radar, and sonar systems are classified in Industry 3812, and those manufacturing similar equipment for communications systems classified in Industry Group 366.

Alternator and generator testersMeters, power factor and phase angle
AmmetersMicrowave test equipment
Ampere-hour metersMultimeters
Analog-to-digital converters, electronic instrumentation typeNetwork analyzers
Analyzers for testing electrical characteristicsOhmmeters
Audiometers, except medicalOscillators, audio frequency and radio frequency (instrument types)
Automotive ammeters and voltmetersOscillographs and oscilloscopes
Battery testers, electricalPotentiometric instruments, except industrial process type
Bleed control cabinets (engine testers)Power measuring equipment, electrical
Bridges, electrical: e.g., Kelvin, Wheatstone, vacuum tube, and megohmPulse (signal) generators
Current measuring equipmentRadar testing instruments, electric
Decade boxes: capacitance, inductance, and resistanceRadio apparatus analyzers for testing electrical characteristics
Demand meters, electricRadio frequency measuring equipment
Digital panel meters, electricity measuringRadio set analyzers, electrical
Digital test equipment, electronic and electrical circuits and equipmentRadio tube checkers, electrical
Digital-to-analog converters, electronic instrumentation, typeRecorders, oscillographic
Diode and transistor testersReflectometers, sliding shorts
Distortion meters and analyzersResistance measuring equipment
Elapsed time meters, electronicSemiconductor test equipment
Electron tube test equipmentSignal generators and averages
Electronic test equipment for testing electrical characteristicsSpark plug testing instruments, electric
Energy measuring equipment, electricalSpectrum analyzers
Field strength and intensity measuring equipment, electricalStandard cells
Frequency meters: electrical, mechanical, and electronicStandards and calibration equipment for electrical measuring, except laboratory
Frequency synthesizersStanding wave ratio measuring equipment
Function generatorsStroboscopes
Galvanometers, except geophysicalSweep generators
Ignition testing instrumentsSweep oscillators
Impedance measuring equipmentSynchroscopes
Indicating instruments, electricTachometer generators
Instrument relays, all typesTest equipment for electronic and electrical circuits and equipment
Instrument shuntsTest sets, ignition harness
Instruments for measuring electrical quantitiesTime code generators
Instruments, electric: for testing electrical characteristicsTransformers, instrument: portable
Integrated-circuit testersTube testers
Integrating electricity metersVolt-ohm milliammeters
Internal combustion engine analyzers, to test electrical characteristicsVoltmeters
Laboratory standards, electric: resistance, inductance, and capacitanceWatt-hour and demand meters, combined
Logic circuit testersWatt-hour and time switch meters, combined
Measuring equipment for electronic and electrical circuits and equipmentWatt-hour meters, electric
Measuring instruments and meters, electricWattmeters
Meters, electric: pocket, portable, panelboard, and graphic recordingWaveform measuring and/or analyzing equipment
Codes Titles Number of US Businesses
3825Instruments To Measure Electricity1,894
382500Instruments to measure electricity451
38250000Instruments to measure electricity451
382501Engine electrical test equipment141
38250100Engine electrical test equipment23
38250101Alternator and generator testers4
38250102Automotive ammeters and voltmeters1
38250103Battery testers, electrical23
38250105Digital test equipment, electronic and electrical circuits62
38250106Ignition testing instruments8
38250107Internal combustion engine analyzers, to test electronics18
38250108Spark plug testing equipment, electric1
38250109Test sets, ignition harness1
382502Test equipment for electronic and electric measurement945
38250200Test equipment for electronic and electric measurement235
38250201Analog-digital converters, electronic instrumentation type39
38250202Analyzers for testing electrical characteristics, nec10
38250204Bridges: Kelvin, Wheatstone, vacuum tube, megohm, etc.1
38250205Decade boxes: capacitance, inductance, and resistance0
38250206Digital panel meters, electricity measuring15
38250207Diode and transistor testers1
38250209Electron tube test equipment7
38250210Frequency synthesizers7
38250211Function generators0
38250212Impedance measuring equipment0
38250213Instrument relays, all types2
38250215Integrated circuit testers16
38250216Lab standards, electric: resistance, inductance, capacitance4
38250217Logic circuit testers4
38250218Microwave test equipment18
38250219Network analyzers201
38250220Pulse (signal) generators2
38250221Radar testing instruments, electric10
38250222Radio apparatus analyzers, nec8
38250223Radio set analyzers, electrical4
38250225Reflectometers, sliding shorts1
38250226Semiconductor test equipment98
38250227Shunts, electrical2
38250228Signal generators and averagers8
38250229Spectrum analyzers16
38250230Standard cells2
38250231Standards and calibrating equipment, laboratory23
38250232Standards and calibration equipment for electrical measuring20
38250233Sweep generators2
38250235Tachometer generators2
38250236Test equipment for electronic and electrical circuits150
38250237Time code generators2
38250238Transducers for volts, amperes, watts, vars, frequency, etc.19
38250239Transformers, portable: instrument3
38250241Waveform measuring and/or analyzing equipment, nec5
38250242X-Y recorders (plotters), except computer peripheral equip.1
382503Electrical energy measuring equipment346
38250300Electrical energy measuring equipment55
38250301Ammeters, nec1
38250302Ampere-hour meters1
38250303Current measuring equipment, nec5
38250304Demand meters, electric1
38250305Electrical power measuring equipment42
38250306Energy measuring equipment, electrical44
38250307Field strength and intensity measuring equipment, electrical3
38250308Frequency meters: electrical, mechanical, and electronic13
38250310Instruments for measuring electrical quantities11
38250311Integrating electricity meters11
38250312Measuring instruments and meters, electric43
38250313Meters, power factor and phase angle8
38250314Meters: electric, pocket, portable, panelboard, etc.26
38250317Oscillators, audio and radio frequency (instrument types)18
38250318Oscillographs and oscilloscopes3
38250319Potentiometric instruments, except industrial process type5
38250320Power measuring equipment, electrical9
38250321Radio frequency measuring equipment38
38250322Recorders, oscillographic2
38250323Resistance measuring equipment1
38250326Sweep oscillators1
38250327Volt meters0
38250331Watt-hour meters, electrical3
382599Instruments to measure electricity, nec11
38259901Elapsed time meters, electronic6
38259902Indicating instruments, electric5