Hemmi 257 Bamboo Slide Rule
The Hemmi 257 is a 10-inch bamboo slide rule with Mannheim and trigonometric scales for advanced engineering calculations. It qualifies under HTS 9017.20.4000 as a traditional mathematical calculating instrument valued for precision and collectibility. Crafted from laminated bamboo with metal cursor for durability.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported without scales, as decorative bamboo article
Scale-less bamboo items classify under Chapter 44 as other articles of wood.
If speedometer/rev-counter style with automotive scales
Vehicle-specific calculating devices may fall under revolution counters in 9029.
If includes measuring graduation beyond pure calculation
Instruments combining length measurement with calculation shift to 9031 per chapter notes.
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Import Tips & Compliance
• Document bamboo lamination process and scale precision to distinguish from decorative wooden articles
• Collector's items require origin certificates; HTS classification unaffected by age but affects valuation
• Avoid classifying with protective cases; separate leather/metal cases go to Chapter 42
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