Other Measuring and Controlling Device Manufacturing
Manufacturing measuring and controlling devices (except search, detection, navigation, guidance, aeronautical, and nautical instruments and systems; automatic environmental controls for residential, commercial, and appliance use; instruments for measurement, display, and control of industrial process variables; totalizing fluid meters and counting devices; instruments for measuring and testing electricity and electrical signals; analytical laboratory instruments; irradiation equipment; and electromedical and electrotherapeutic apparatus).
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What is SBA Size Standard?
The maximum number of employees a business can have to qualify as a "small business" for federal contracting and SBA loan programs.
What's Included
- ✓Aircraft engine instruments manufacturing
- ✓Automotive emissions testing equipment
- ✓manufacturing
- ✓Clocks assembling
- ✓Meteorological instruments manufacturing
- ✓Physical properties testing and inspection equipment
- ✓manufacturing
- ✓Polygraph machines manufacturing
- ✓Radiation detection and monitoring instruments
- ✓manufacturing
- ✓Surveying instruments manufacturing
- ✓Thermometers, liquid-in-glass and bimetal types
- ✓(except medical), manufacturing
- ✓Watches (except smartwatches) and parts (except
- ✓crystals) manufacturing
- ✓MANUFACTURING
- ✓271
- ✓T—Canadian, Mexican, and United States industries are comparable.
- ✓census.gov/naics
Example Companies
- ●Danaher- Precision instruments
- ●Roper Technologies- Industrial technology
- ●Ametek- Electronic instruments
This Code is NOT For...
NAICS 334519 does not cover the following activities. Use the correct code instead:
Manufacturing medical thermometers
Manufacturing automatic controls and regulators for applications, such as heating, air-conditioning, refrigeration and appliances
Manufacturing instruments and related devices that measure, display, or control (i.e., monitor or analyze) industrial process variables
Manufacturing totalizing (i.e., registering) fluid meters and counting devices, including motor vehicle gauges
Manufacturing instruments for laboratory analysis of the physical composition or concentration of samples of solid, fluid, gaseous, or composite materials
Manufacturing X-ray apparatus, tubes, or related irradiation apparatus
+ 5 more exclusions for this code
Related NAICS Codes
Frequently Asked Questions
Yes. Most businesses operate under several NAICS codes. Your primary code should reflect your main source of revenue. You can list secondary codes for other business activities when registering with government agencies or applying for contracts.
Choose the NAICS code that represents your largest revenue source as your primary code. You can add secondary codes for other activities. For example, a restaurant that also offers catering would use Full-Service Restaurants as the primary code and Caterers as a secondary code.
NAICS codes do not directly determine your tax obligations. However, certain tax credits, deductions, and industry-specific regulations may reference NAICS codes to determine eligibility. Your actual tax liability depends on your business structure and activities, not your classification code.
No. The NAICS code on your EIN application is for statistical purposes only. You can update it if your business activities change. The IRS uses this information for economic analysis, not for determining your tax treatment.
You can update your NAICS code when filing your next business tax return or by contacting the IRS. For government contracts, update your code in SAM.gov. There is no penalty for changing codes as your business evolves or if you selected the wrong code initially.