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End-UseCategory 2
U.S. imports of measuring, testing & control instruments (End-Use 21160) totaled $2.4B in April 2026, traded with 135 countries.
Importers of Measuring, Testing & Control Instruments paid $179.8M in duties in April 2026 — an effective duty rate of 12% on $1.5B in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataImported measuring, testing, and control instruments fill critical gaps in US industrial and laboratory supply chains, particularly for high-precision optical and electronic metrology equipment. Germany and Japan are among the historically significant sources for advanced instrumentation, reflecting deep engineering specialization in those markets. Classification under HTS Chapter 90 is technically demanding, as the correct subheading depends on the instrument's measurement principle, accuracy class, and intended application — distinctions that directly affect applicable duty rates.
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Instruments that both measure a parameter and automatically regulate a process (e.g., a flow controller) can be classified either as measuring instruments or as automatic regulating apparatus, which fall under different Chapter 90 headings with different duty rates. The classification turns on whether the control function or the measurement function is primary, and CBP has issued binding rulings on this distinction — making advance ruling requests a prudent step for high-value shipments.
Most industrial measuring and control instruments do not require FDA review. However, instruments intended for in vitro diagnostic use or for direct patient monitoring may be regulated as medical devices under FDA jurisdiction and require appropriate registration and clearance before importation. Importers should confirm the instrument's intended use and consult with a customs broker or regulatory counsel if medical device classification is possible.
End-Use codes describe different products on the import and export sides. Cross-direction exports are not shown for this slug.
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Monthly import values over time