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
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
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