Log Log Duplex Trig Slide Rule from China
Advanced slide rule with log-log scales on both sides for exponential and trigonometric calculations in nuclear physics and rocketry. Under HTS 9017.20.4000 as a high-end mathematical instrument. Magnesium or ivory construction with multiple cursors.
Duty Rate — China → United States
41.4%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Import Tips
• Scientific institution letters support classification for research-grade instruments
• Rare materials (ivory substitutes) require CITES-like documentation even for synthetics
• Avoid 'collectible' valuation; functional testing confirms instrument status