Fabry-Perot Interferometer Spacer from Germany
Precision invar spacer tube maintaining cavity length in Fabry-Perot laser spectrum analyzers. Falls under HTS 9013.90.70.00 as an optical instrument part.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Specify thermal expansion coefficient (1.2×10^-6/°C) proving precision function
• Include finesse calculation data showing spacer criticality
• Document material certification for dimensional stability