Measuring, Lab, Environmental and Control Device Manufacturing

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, as well as internal combustion engines. Sample business functions include alternator and generator testers, ammeters, ampere-hour meters, analog-to-digital converters (electronic instrumentation type), analyzers for testing electrical characteristics, audiometers (excluding medical), automotive ammeters and voltmeters, electrical battery testers, bleed control cabinets for engine testing, and electrical bridges such as Kelvin, Wheatstone, and vacuum tube bridges.

Establishments primarily engaged in manufacturing laboratory instruments and instrumentation systems for chemical or physical analysis of the composition or concentration of solid, fluid, gaseous, or composite material samples. Sample business functions include amino acid analyzers, automatic chemical analyzers, chromatographic instruments, colorimeters, coulometric analyzers, analytical densitometers, differential thermal analysis instruments, electrolytic conductivity instruments, electron paramagnetic spin apparatus, and electrophoresis instruments, all for laboratory use.

Establishments primarily engaged in manufacturing instruments and apparatus that measure optical properties or optically project, measure, or magnify an image, such as binoculars, microscopes, prisms, and lenses. This industry also includes establishments primarily engaged in manufacturing optical sighting and fire control equipment. Sample business functions include aiming circles for fire control, binoculars, plotting, spotting, and gun fire adjustment boards, borescopes, cinetheodolites, Coddington magnifying instruments, contour projectors, percentage, wind, and roll correctors for sighting and fire control, fuse setters for fire control equipment, and field or opera glasses.

Establishments primarily engaged in manufacturing measuring and controlling devices not elsewhere classified, including meteorological instruments. Important products of this industry include 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, and T-squares. Sample business functions include accelerometers (except aerospace type), actinometers (meteorological), alidades (surveying), anemometers, barographs, mercury and aneroid barometers, cable testing machines, ceilometers, electronic chronometers, and clinical thermometers (including digital).