38mm Double Convex Lens Great for Physics Classrooms Polished Ground Edges 300mm Focal Length Eisco Labs Diameter 1.5 Optically Worked Glass Lens Spherical


38mm Double Convex Lens Great for Physics Classrooms Polished Ground Edges 300mm Focal Length Eisco Labs Diameter 1.5 Optically Worked Glass Lens Spherical

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38mm Double Convex Lens Great for Physics Classrooms Polished Ground Edges 300mm Focal Length Eisco Labs Diameter 1.5 Optically Worked Glass Lens Spherical
38mm Double Convex Lens Great for Physics Classrooms Polished Ground Edges 300mm Focal Length Eisco Labs Diameter 1.5 Optically Worked Glass Lens Spherical
38mm Double Convex Lens Great for Physics Classrooms Polished Ground Edges 300mm Focal Length Eisco Labs Diameter 1.5 Optically Worked Glass Lens Spherical
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38mm Double Convex Lens Great for Physics Classrooms Polished Ground Edges 300mm Focal Length Eisco Labs Diameter 1.5 Optically Worked Glass Lens Spherical