3829  Measuring and Controlling Devices, Not Elsewhere Classified

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.