10 Polarization Test Cards for Sunglasses – 6cm x 4cm, Black

Overview

These 10 polarization test cards are a quick, reliable way to verify the authenticity of portable polarized sunglasses. Each card is printed on high‑quality paper and measures approximately 6 cm by 4 cm (2.4" x 1.6"). The cards display a distinctive pattern that appears when viewed through a genuine polarized lens, allowing you to confirm the lens’s polarization without specialized equipment.

Designed for both consumers and professionals, the cards provide an easy visual test that can be performed anywhere. They are not sunglasses themselves, but a practical tool for quality assurance.

Why You'll Like It

• Instant verification of polarized lenses with a simple visual check
• Compact, lightweight design for on‑the‑go testing
• Durable paper construction that resists tearing and fading
• Clear, high‑contrast pattern for easy interpretation
• Affordable set of 10 cards for repeated use

Who It's For

• Retailers and repair shops needing a quick authenticity test
• Outdoor enthusiasts who want to confirm their sunglasses’ performance
• Manufacturers and quality control teams verifying product integrity

Package Details

• 10 individual test cards
• Each card: 6 cm x 4 cm (2.4" x 1.6")
• Black printed pattern on high‑quality paper