60pcs Biconvex Lens Physics Teaching Tools Experiment Tools Middle School Optical Lens Lenses Physics for Laboratory Lens for Physics Teaching Double Convex Lens Optical Lens Kit June_2023_update Cutting edge diameter: 6 mm(1/4

Cutting edge diameter: 6 mm(1/4 inch)

we will immediately send you the product or give you a full refund

25mmHex Width: 13mm / 0

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60pcs Biconvex Lens Physics Teaching Tools Experiment Tools Middle School Optical Lens Lenses Physics for Laboratory Lens for Physics Teaching Double Convex Lens Optical Lens Kit June_2023_update Cutting edge diameter: 6 mm(1/460pcs Biconvex Lens Physics Teaching Tools Experiment Tools Middle School Optical Lens Lenses Physics for Laboratory Lens for Physics Teaching Double Convex Lens Optical Lens Kit Description These are some physics optical lens applied to understand the principle more intuitively. Adopting good materials, they are safe and for period to use. Small size, easy to use, these physics teaching lens can stimulate students' cognitive ability in physics,