This U.S. industry comprises establishments primarily engaged in manufacturing measuring and controlling devices (except search, detection, navigation, guidance, aeronautical, and nautical instruments and systems; automatic environmental controls for residential, commercial, and appliance use; instruments for measurement, display, and control of industrial process variables; totalizing fluid meters and counting devices; instruments for measuring and testing electricity and electrical signals; analytical laboratory instruments; irradiation equipment; and electromedical and electrotherapeutic apparatus).

• Aircraft engine instruments manufacturing
• Automotive emissions testing equipment manufacturing
• Clocks assembling
• Meteorological instruments manufacturing
• Physical properties testing and inspection equipment manufacturing
• Polygraph machines manufacturing
• Radiation detection and monitoring instruments manufacturing
• Surveying instruments manufacturing
• Thermometers, liquid-in-glass and bimetal types (except medical), manufacturing
• Watches and parts (except crystals) manufacturing

• Abrasion testing machines manufacturing
• Accelerometers (except aerospace type) manufacturing
• Actinometers, meteorological, manufacturing
• Aircraft engine instruments manufacturing
• Alarm clocks manufacturing
• Alidades, surveying, manufacturing
• Appliance timers manufacturing
• Automotive emissions testing equipment manufacturing
• Barographs manufacturing
• Barometers manufacturing
• Ceilometers manufacturing
• Chains, surveyor's, manufacturing
• Chronographs manufacturing
• Chronometers manufacturing
• Clock materials and parts (except crystals) manufacturing
• Clock or watch springs, precision, made from purchased wire
• Clocks assembling
• Clocks assembling from purchased components
• Commercial timing mechanisms manufacturing
• Compasses, portable magnetic-type, manufacturing
• Count rate meters, nuclear radiation, manufacturing
• Dating devices and machines (except rubber stamps) manufacturing
• Detectors, scintillation, manufacturing
• Dosimetry devices manufacturing
• Drafting instruments manufacturing
• Dynamometers manufacturing
• Evaporation meters manufacturing
• Fatigue testing machines, industrial, mechanical, manufacturing
• Fire detector systems, nonelectric, manufacturing
• Fuel densitometers, aircraft engine, manufacturing
• Fuel mixture indicators, aircraft engine, manufacturing
• Fuel system instruments, aircraft, manufacturing
• Fuel totalizers, aircraft engine, manufacturing
• Galvanometers, geophysical, manufacturing
• Gas leak detectors manufacturing
• Geiger counters manufacturing
• Geophysical instruments manufacturing
• Hand stamps (e.g., date, time), timing mechanism operated, manufacturing
• Hardness testing equipment manufacturing
• Household-type timing mechanisms manufacturing
• Humidity instruments (except industrial process and air-conditioning type) manufacturing
• Hydrometers (except industrial process-type) manufacturing
• Hygrometers (except industrial process-type) manufacturing
• Hygrothermographs manufacturing
• Indicator testers, turntable, manufacturing
• Instrumentation for reactor controls, auxiliary, manufacturing
• Ion chambers manufacturing
• Kinematic test and measuring equipment manufacturing
• Leak detectors, water, manufacturing
• Level gauges, radiation-type, manufacturing
• Levels and tapes, surveying, manufacturing
• Lie detectors manufacturing
• Magnetometers manufacturing
• Mechanisms, clockwork operated device, manufacturing
• Metal detectors manufacturing
• Meteorologic tracking systems manufacturing
• Meteorological instruments manufacturing
• Modules for clocks and watches manufacturing
• Movements, watch or clock, manufacturing
• Nephoscopes manufacturing
• Nuclear instrument modules manufacturing
• Physical properties testing and inspection equipment manufacturing
• Pitometers manufacturing
• Polygraph machines manufacturing
• Pressure and vacuum indicators, aircraft engine, manufacturing
• Pressure transducers manufacturing
• Pulse analyzers, nuclear monitoring, manufacturing
• Pyrheliometers manufacturing
• RADIAC (radioactivity detection, identification, and computation) equipment manufacturing
• Radiation detection and monitoring instruments manufacturing
• Radioactivity detection, identification, and computation (RADIAC) equipment manufacturing
• Rain gauges manufacturing
• Rods, surveyor's, manufacturing
• Rules, slide, manufacturing
• Sample changers, nuclear radiation, manufacturing
• Scalers, nuclear radiation, manufacturing
• Scintillation detectors manufacturing
• Seismographs manufacturing
• Seismometers manufacturing
• Seismoscopes manufacturing
• Sextants, surveying, manufacturing
• Solarimeters manufacturing
• Spectrometers (e.g., liquid scintillation, nuclear) manufacturing
• Springs, clock and watch, made from purchased wire
• Surveying instruments manufacturing
• Tapes, surveyor's, manufacturing
• Templates, drafting, manufacturing
• Tensile strength testing equipment manufacturing
• Testers for checking hydraulic controls on aircraft manufacturing
• Testing equipment (e.g., abrasion, shearing strength, tensile strength, torsion) manufacturing
• Theodolites, surveying, manufacturing
• Thermocouples (except industrial process, aircraft type, glass vacuum) manufacturing
• Thermometer, liquid-in-glass and bimetal types (except medical), manufacturing
• Thickness gauging instruments, ultrasonic, manufacturing
• Thrust power indicators, aircraft engine, manufacturing
• Time clocks and time recording devices manufacturing
• Time locks manufacturing
• Time stamps containing clock mechanisms manufacturing
• Timers for industrial use, clockwork mechanism, manufacturing
• Timing mechanisms, clockwork, manufacturing
• Torsion testing equipment manufacturing
• Transducers, pressure, manufacturing
• Transits, surveying, manufacturing
• T-squares (drafting) manufacturing
• Ultrasonic testing equipment (except medical) manufacturing
• Vibration meters, analyzers, and calibrators, manufacturing
• Viscosimeters (except industrial process type) manufacturing
• Wall clocks manufacturing
• Watch jewels manufacturing
• Watchcase manufacturing
• Watches and parts (except crystals) manufacturing
• Water leak detectors manufacturing
• Weather tracking equipment manufacturing
• Whole body counters, nuclear, manufacturing
• Wind direction indicators manufacturing