This magnifying convex glass lens is practical, ensuring a clear and precise magnification effect. It is an essential tool for physics classrooms, allowing students to conduct experiments with focused light and explore the principles of optics.<br> Features<br> - Color: Transparent<br> -Material:Glass<br> - Size: 7.50X7.50X1.00cm/2.95X2.95X0.39in<br> -focal length: 25mm<br> -Convex glass lens offers magnification, more practical to use.<br> -Specifically designed for use in physics classrooms and spotlight lens experiments.<br> -Convex glass lens is also nice for conducting solar energy experiments and applications.<br> -The glass material used in its construction ensures durability and reliability, making it suitable for long-term use.<br> -Boasts a multifunctional design that is suitable for use in various scenarios and for different purposes.<br> Package list: 1 x Convex lens