NAICS 334515 — Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals 
BEA sector: Electricity and signal testing instruments manufacturing
Activity: Meters, electrical (i.e., graphic recording, panelboard, pocket, portable), manufacturing
Activity: Meters, power factor and phase angle, manufacturing
Activity: Microwave test equipment manufacturing
Activity: Multimeters manufacturing
Activity: Ohmmeters manufacturing
Activity: Oscillators (e.g., instrument type audiofrequency and radiofrequency) manufacturing
Activity: Oscilloscopes manufacturing
Activity: Phase angle meters manufacturing
Activity: Portable test meters manufacturing
Activity: Potentiometric instruments (except industrial process-type) manufacturing
Activity: Power factor meters manufacturing
Activity: Power measuring equipment, electrical, manufacturing
Activity: Pulse (i.e., signal) generators manufacturing
Activity: Radar testing instruments, electric, manufacturing
Activity: Radiofrequency measuring equipment manufacturing
Activity: Radiofrequency oscillators manufacturing
Activity: Recorders, oscillographic, manufacturing
Activity: Relays (except electrical, electronic), instrument, manufacturing
Activity: Resistance measuring equipment manufacturing
Activity: Semiconductor test equipment manufacturing
Activity: Shunts, instrument, manufacturing
Activity: Signal generators and averagers manufacturing
Activity: Spark plug testing instruments, electric, manufacturing
Activity: Spectrum analyzers manufacturing
Activity: Standards and calibration equipment for electrical measuring manufacturing
Activity: Standing wave ratio measuring equipment manufacturing
Activity: Stroboscopes manufacturing
Activity: Sweep generators manufacturing
Activity: Sweep oscillators manufacturing
Activity: Synchroscopes manufacturing
Activity: Tachometer generators manufacturing
Activity: Test equipment for electronic and electrical circuits and equipment manufacturing
Activity: Test sets, ignition harness, manufacturing
Activity: Voltmeters manufacturing
Activity: Watt-hour and demand meters, combined, manufacturing
Activity: Watt-hour and time switch meters, combined, manufacturing
Activity: Watt-hour meters, electric, manufacturing
Activity: Wattmeters manufacturing
Activity: Waveform measuring and/or analyzing equipment manufacturing
Activity: Wheatstone bridges (i.e., electrical measuring instruments) manufacturing
Activity: X-Y recorders (i.e., plotters (except computer peripheral equipment)) manufacturing