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,
  • 3812 Search, Detection, Navigation, Guidance, Aeronautical, And Nautical
  
  
• 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
  • 3841 Surgical And Medical Instruments And Apparatus
  • 3842 Orthopedic, Prosthetic, And Surgical Appliances And Supplies
  • 3843 Dental Equipment And Supplies
  • 3844 X-ray Apparatus And Tubes And Related Irradiation Apparatus
  • 3845 Electromedical And Electrotherapeutic Apparatus
  
  
• Industry Group 385: Ophthalmic Goods
  • 3851 Ophthalmic Goods
  
  
• Industry Group 386: Photographic Equipment And Supplies
  • 3861 Photographic Equipment And Supplies
  
  
• Industry Group 387: Watches, Clocks, Clockwork Operated Devices,
  • 3873 Watches, Clocks, Clockwork Operated Devices, And Parts