9018.90.20.00/Keratometer Measurement Head/Japan

Keratometer Measurement Head from Japan

Precision optical attachment measuring corneal curvature for contact lens fitting. Classifies under HTS 9018.90.20.00 as optical appliance part for sight-testing. Provides dioptric measurements of corneal astigmatism.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

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Import Tips

• Calibrate against NIST-traceable standards before import declaration

• Declare as medical device part with principal use documentation

• Avoid describing as 'industrial optical gauge' to prevent Chapter 90 shift