This major group includes establishments engaged in manufacturing instruments (including professional and scientific) for measuring, testing, analyzing, and controlling, and their associated sensors and accessories; optical instruments and lenses; surveying and drafting instruments; hydrological, hydrographic, meteorological, and geophysical equipment; search, detection, navigation, and guidance systems and equipment; surgical, medical, and dental instruments, equipment, and supplies; ophthalmic goods; photographic equipment and supplies; and watches and clocks.
- Industry Group 381: Search, Detection, Navigation, Guidance
- Industry Group 382: Laboratory Apparatus And Analytical,
Optical
- 3821 Laboratory Apparatus And Furniture
- 3822 Automatic Controls For Regulating Residential And Commercial
- 3823 Industrial Instruments For Measurement, Display, And Control Of
- 3824 Totalizing Fluid Meters And Counting Devices
- 3825 Instruments For Measuring And Testing Of Electricity And Electrical
- 3826 Laboratory Analytical Instruments
- 3827 Optical Instruments And Lenses
- 3829 Measuring And Controlling Devices, Not Elsewhere Classified
- Industry Group 384: Surgical, Medical, And Dental Instruments And
- Industry Group 385: Ophthalmic Goods
- Industry Group 386: Photographic Equipment And Supplies
- Industry Group 387: Watches, Clocks, Clockwork Operated Devices

