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HSChapter 90
U.S. imports of instruments for measuring voltage, current, resistance, or power — without recording device, excluding multimeters (nesoi) (HS 903039) totaled $21.3M in April 2026, traded with 42 countries.
Importers of Instruments for Measuring Voltage, Current, Resistance, or Power — Without Recording Device, Excluding Multimeters (NESOI) paid $1.8M in duties in April 2026 — an effective duty rate of 11% on $16.9M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataSpecialized single-function or application-specific instruments that measure electrical quantities without a recording device — but are not multimeters — land in this residual heading, which carries a single US tariff line (9030390100). Products such as dedicated clamp meters, insulation testers, and high-voltage probes designed for specific industrial or laboratory tasks are typical candidates. The United Kingdom and Germany are the leading suppliers, reflecting the strong European precision-instrument manufacturing base for niche electrical test equipment. Correct exclusion of multimeters and recording-capable devices is the key classification gatekeeping step for this heading.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Two exclusions define this heading: the instrument must lack an integrated recording device, and it must not be a multimeter. A clamp meter that reads only current with no data storage, or a dedicated insulation resistance tester, would qualify. Adding a memory or data-output function shifts classification to a recording-device subheading; combining multiple measurement functions in one handheld unit may make it a multimeter instead.
Yes. The boundary between a specialized single-function instrument and a multimeter is frequently litigated at CBP. If a device measures two or more electrical parameters — even without a recording function — importers should consider requesting a binding ruling to lock in the correct classification before shipment, avoiding potential reclassification and back-duty exposure.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CANADA | $2.7M | $4.5M | +$1.8M |
| UNITED KINGDOM | $4.0M | $1.4M | -$2.6M |
| GERMANY | $4.8M | $407K | -$4.4M |
| MEXICO | $983K | $3.8M | +$2.9M |
| KOREA, SOUTH | $280K | $2.3M | +$2.0M |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 9030390100 | INST TO CHECK VOLT/CURRENT/ETC,W/RECORD DEVICE NES | $21.3M | 10.88% | $1.8M |
INST TO CHECK VOLT/CURRENT/ETC,W/RECORD DEVICE NES
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 9030390100 | INST TO CHECK VOLT/CURRENT/ETC,W/RECORD DEVICE NES | $24.8M |
INST TO CHECK VOLT/CURRENT/ETC,W/RECORD DEVICE NES
12.6K no
INSTR & APPL F MEDICAL SURGICAL DENTAL VET, NESOI
HS 901890
MED NEEDLES. NESOI, CATHERERS ETC AND PARTS ETC
HS 901839
ARTIFICIAL JOINTS & PARTS & ACCESSORIES THEROF,NES
HS 902139
ELECTRO-DIAGNOSTIC APPARATUS NESOI, AND PARTS ETC.
HS 901819
OZONE,OXYGEN,ETC THERAPY, RESPIRATION APPARATUS,PT
HS 901920
MEAS CHECKNG INSTRUMENT & MACH, NOT OPTICAL, NESOI
HS 903180
| State | Imports | Exports | Balance |
|---|---|---|---|
| Texas | $1.8M | $6.2M | +$4.4M |
| California | $3.3M | $4.3M | +$1.0M |
| Virginia | $4.0M | -- | -$4.0M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| CLEVELAND, OH | $1.7M | $2.4M | +$726K |
| NEW ORLEANS, LA | $1.8M | $1.9M | +$150K |
| WASHINGTON, DC | $2.1M | $1.5M | -$658K |