Slide Rule Log-Log Engineering Calculator
A bamboo and metal slide rule with logarithmic scales for complex engineering calculations like multiplication, division, and trigonometry. Falls under HTS 9017.20.80 as a mathematical calculating instrument, distinct from electronic calculators. Used by aerospace engineers for rapid computations without batteries.
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More Specific Codes
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If incorporating electronic display or pocket calculator functions
Hybrid electro-mechanical calculators classify with Chapter 84 ADP machines, not purely mechanical instruments
If analog instruments for gas/liquid analysis rather than pure math
Slide rules with chemical conversion scales for lab analysis fall under 9023 as analog measuring instruments
If imported as individual scales or cursors without full assembly
Disassembled components classify as parts under Chapter Note 2(b) rather than complete calculating instruments
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Import Tips & Compliance
• Include historical/technical literature proving mechanical calculation function to distinguish from novelties
• Declare cursor and scale materials separately if over certain value thresholds trigger additional metallurgical declarations
• Avoid misdeclaration as 'office supplies' which would shift to Chapter 96; emphasize engineering precision scales
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