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. It is a specialized mathematical calculating instrument, qualifying under drawing, marking-out or mathematical calculating instruments.
Duty Rate — Mexico → Canada
0%
Import Tips
• Ensure the slide rule is not electronic; it is a manual instrument
• Declare the material (e.g
• white plastic) for accurate duty rates
• Keep documentation showing its mathematical function for CBSA