Keuffel & Esser Decilon Slide Rule from Mexico
The K&E Decilon features decimal-aligned scales for high-precision scientific calculations, popular among physicists and surveyors. Falls under HTS 9017.20.4000 as a specialized mathematical calculating instrument. White celluloid on wood construction with smooth cursor mechanism.
Duty Rate — Mexico → United States
13.9%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide scale function charts; customs may test functionality to confirm calculating purpose
• Historical replicas must specify reproduction scales identical to originals