Establishments primarily engaged in manufacturing measuring and controlling devices, not elsewhere classified, including meteorological instruments. Important products of this industry are physical properties testing equipment, nuclear radiation detection and monitoring instrumentation, aircraft engine instruments (except flight), and liquid-in-glass and bimetal thermometers. Also included in this industry are establishments primarily engaged in manufacturing surveying and drafting instruments, such as alidades, transits, sextants, theodolites, slide rules, and T- squares.

• Accelerometers, except aerospace type
• Actinometers, meteorological
• Alidades, surveying
• Anamometers
• Barographs
• Barometers, mercury and aneroid types
• Cable testing machines
• Ceilometers
• Chronometers, electronic
• Clinical thermometers, including digital
• Compasses, magnetic: portable type
• Count rate meters, nuclear radiation
• Drafting instruments and machines
• Dynamometer instruments
• Electrogamma ray loggers
• Evaporation meters
• Fare registers: e.g., for streetcars and buses
• Fatigue testing machines, industrial: mechanical
• Fuel densitometers, aircraft engine
• Fuel mixture indicators, aircraft engine
• Fuel system instruments, aircraft
• Fuel totalizers, aircraft engine
• Gauges except electric, motor vehicle: oil pressure and water
• Gauging instruments, thickness: ultrasonic
• Geiger counters
• Hardness testing equipment
• Humidity instruments, except industrial process and air-conditioning
• Hydrometers, except industrial process type
• Hygrometers, except industrial process type
• Hygrothermographs
• Instrumentation for reactor controls, auxiliary
• Ion chambers
• Kinematic test and measuring equipment
• Level gauges, radiation type
• Levels and tapes, surveying
• Magnetometers
• Map plotting instruments
• Meteorogic tracking systems
• Meteorological instruments
• Nephoscopes
• Nuclear instrument modules
• Nuclear radiation detection and monitoring instruments
• Personnel dosimetry devices
• Photogrammetrical instruments
• Photopitometers
• Physical properties testing and inspection equipment
• Pitometers
• Pressure and vacuum indicators, aircraft engine
• Pulse analyzers, nuclear monitoring
• Pyrheliometers
• Radiation measuring and detecting (radiac) equipment
• Rain gauges
• Restitution apparatus, photogrammetrical
• Sample changers, nuclear radiation
• Scalers, nuclear radiation
• Scintillation detectors
• Seismographs
• Seismometers
• Seismoscopes
• Sextants, surveying
• Solarimeters
• Spectrometers, liquid scintillation and nuclear
• Stereotopographs
• Stress, strain, and flaw detecting and measuring equipment
• Surveying instruments
• Synchronizers, aircraft engine
• Testers for checking hydraulic controls on aircraft
• Testing equipment: abrasion, shearing strength, tensile strength, and
• Theodolites, surveying
• Thermocouples, except industrial process, aircraft type, and glass
• Thermohydrometers
• Thermometers, liquid-in-glass and bimetal types
• Thrust power indicators, aircraft engine
• Toll booths, automatic
• Transducers, pressure
• Transits, surveying
• Turnstiles, equipped with counting mechanisms
• Ultrasonic testing equipment
• Vibration meters, analyzers, and calibrators
• Viscosimeters, except industrial process type
• Weather tracking equipment
• Whole body counters, nuclear
• Wind direction indicators