By Outrider Editorial Team · Updated August 20, 2026
Official definition
This U.S. industry comprises establishments primarily engaged in manufacturing instruments for measuring and testing the characteristics of electricity and electrical signals. Examples of products made by these establishments are circuit and continuity testers, voltmeters, ohm meters, wattmeters, multimeters, and semiconductor test equipment.
FY2025 obligations
$455.2M
Contract actions
2,841
IDVs
155
Top buying agencies
- Department of Defense$369.1M
- General Services Administration$59.1M
- Department of Transportation$10.3M
- Department of Commerce$3.6M
- Department of Health and Human Services$2.4M
FY2025 federal contract obligations, USAspending.gov
NAICS 334515 obligated $455 million in FY2025 across 2,841 contract actions. DoD is $369 million, GSA $59 million, DOT $10 million, Commerce $4 million, HHS $2 million. Behind the DoD number sits a specific community: test, measurement, and diagnostic equipment programs that maintain calibrated instrument inventories across every depot, shipyard, and maintenance activity in the department.
What belongs here
Instruments for measuring and testing the characteristics of electricity and electrical signals: circuit and continuity testers, voltmeters, ohm meters, wattmeters, multimeters, and semiconductor test equipment.
- Other measuring and controlling devices are 334519.
- Laboratory chemical and physical analysis instruments are 334516.
- Performing calibration as a service is 541380.
Competing in this code
155 IDVs against 2,841 actions and a $160,000 average is a moderate mix of catalog orders and equipment refresh buys. The distinguishing federal requirement is calibration interval and support: DoD test equipment has to be calibrated on a defined schedule against a documented standard, and instruments that cannot be supported by the government's own calibration laboratories create a lifecycle cost problem that shows up in evaluation. A manufacturer that publishes calibration procedures compatible with government laboratories, and supports them for the instrument's fielded life, removes the objection that most often blocks a commercial product.
Frequently Asked
NAICS 334515 questions, answered.
What is the SBA size standard for NAICS 334515?
SBA sets it at 750 employees, counted as a 24-month average headcount across your company and every affiliate, not revenue. At or under that number you are small on NAICS 334515 solicitations and eligible for the set-asides in this code.
Which agencies buy electrical test instruments under NAICS 334515?
FY2025 obligations: DoD ($369 million), GSA ($59 million), DOT ($10 million), Commerce ($4 million), HHS ($2 million). DoD's share is driven by test, measurement, and diagnostic equipment programs maintaining calibrated inventories across depots and maintenance activities.
What blocks commercial test instruments from federal sales in this code?
Calibration supportability. DoD instruments must be calibrated on a defined interval against documented standards, usually by government laboratories. A product without published, compatible calibration procedures and long-term support creates a lifecycle cost that evaluators price against you, even when the instrument itself is superior.
Does calibration service belong in NAICS 334515?
No. 334515 is manufacturing the instruments. Performing calibration as a service is testing laboratory work under 541380, and repairing the instruments is equipment repair under 811210. Firms that both build and service instruments should register all three, because federal buyers issue those requirements separately.
Register Under NAICS 334515
Classify your business correctly to maximize visibility to federal buyers and access small business set-asides.
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