Pickett N3 Slide Rule from Canada
The Pickett N3 is a classic duplex slide rule designed for engineering and scientific calculations, featuring logarithmic scales for multiplication, division, trigonometry, and logarithms. It falls under HTS 9017.20.4000 as a mathematical calculating instrument used for manual computations without electronic components. Primarily used by students and professionals before the advent of electronic calculators.
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
• Verify the instrument is purely mechanical/non-electronic to avoid reclassification under Chapter 85 calculating machines
• Include detailed scale descriptions and historical/educational use in commercial invoice to support classification