Sector Mathematical Instrument from Mexico
Brass sector with proportional scales for multiplication, division, and geometric calculations. HTS 9017.20.80 as historical mathematical calculating instrument. Pivoting arms similar to slide rule operation.
Duty Rate — Mexico → United States
14.6%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Historical instrument declarations with age proofs
• Avoid modern replica misdescription
• Educational end-use statements support Chapter 90