Porro Prism from Germany
Pair of right-angle prisms arranged to invert and revert images in binoculars, providing upright viewing with wide field of view. Falls under HTS 9001.90.50.00 when imported unmounted as individual optical elements rather than assembled binocular sets. Enables stereoscopic vision in field glasses and spotting scopes.
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
• Import as individual prisms, not pairs, to maintain unmounted classification; paired sets may classify as instruments
• Include aluminized coating specifications and environmental durability testing
• Use protective sleeves to prevent coating damage during customs handling