Interferometer Reference Mirror from Canada
A super-polished flat mirror mounted in a vibration-isolated holder for use as a reference surface in laser interferometers for precision metrology. Classified in HTS 9002.90.40.00 for its role in mounted optical measuring instruments.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Certify flatness specs (e.g
• lambda/20); specify instrument compatibility; declare value based on optical quality not substrate