GSC International 4-90903-20 Lens – Double-Convex Glass, 38mm Diameter, 15cm Focal Length – Optical Physics Lens for Labs and Classrooms – Pack of 20 Lenses

This double-convex glass lens is precision-crafted from polished optical glass, measuring 38mm in diameter with a focal length of 15cm. Ideal for physics demonstrations, optics instruction, and experiments exploring image formation, magnification, and focal length. This pack of 20 high-clarity lenses is perfect for classrooms, labs, and STEM learning environments.

Superior Optical Clarity: Polished glass reduces distortion and chromatic aberration for clear imaging

Precision Shaped: Reduces spherical aberration for sharp, focused results in experiments

Classroom Ready: Affordable, reliable lenses designed for frequent use in educational settings

Versatile Application: Ideal for refraction, image projection, and focal length demonstrations

Bulk Pack of 20: Supplied in a set of 20 lenses for group learning or repeat classroom use

⚠️ Proposition 65 Warning for California Residents:

WARNING: This product may expose you to chemicals including styrene and/or bisphenol A (BPA), which are known to the State of California to cause cancer, birth defects, or other reproductive harm.

For more information, visit www.P65Warnings.ca.gov.

This item is not a toy. It is intended for use in educational, scientific, or professional settings only. Adult supervision is required at all times. Improper use may result in injury or damage. Always follow safety guidelines and wear appropriate protective equipment when handling.