Double-Concave Glass Lens Pack of 20 2"H 50mm Diameter Optical Glass Clear 5cm Focal Length Physics Lab Optics Tool By GSC International Inc.

Support classroom learning and large-scale experiments with this Double-Concave Glass Lens Pack of 20, crafted from polished optical glass for accurate light divergence and consistent optical results. Each lens measures 2 inches in height with a 50mm diameter, making them ideal for group activities, lab distribution, and hands-on STEM education. The clear glass design allows students to easily observe how light rays spread through concave surfaces.

Engineered for educational use, each lens features a 5cm focal length, perfect for demonstrating divergence, virtual image formation, and fundamental optical principles. The smooth, polished finish ensures clarity and durability, while the bulk pack format makes it a cost-effective solution for classrooms, laboratories, and training environments. Designed for indoor use, this set delivers both performance and convenience.

Key Features:

• Bulk Classroom Efficiency: Pack of 20 lenses supports group experiments and lab distribution | Full Dimensions (Each): 2"H x 2"W x 0.34"D
• Consistent Optical Performance: Uniform focal length ensures accurate and repeatable results
• Durable Glass Construction: Built for repeated use in classrooms and science labs
• Enhanced Hands-On Learning: Ideal for teaching light divergence and optical behavior
• Cost-Effective Lab Solution: Multi-pack format reduces the need for individual purchases