Keuffel & Esser Decilon Slide Rule from Canada
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 — Canada → United States
13.9%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Provide scale function charts; customs may test functionality to confirm calculating purpose
• Historical replicas must specify reproduction scales identical to originals