Log Log Duplex Trig Slide Rule
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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If physics lab measuring instrument with scales
Lab-specific physical/chemical measuring devices classify in 9027.
If ivory/synthetic ivory construction
Clock/watch instrument parts of ivory go to Chapter 91.
If includes precision length measurement scales
Combined measuring/calculating functions prioritize 9031 per notes.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• 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
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