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Optically worked Protective coated silvered back 38mm diameter 50mm focal length Optically worked concave mirror with silvered back that has protective coating. Dia 38mm, Focal length 50mm
Double Convex Lens, 100mm Focal Length, 2" (50mm) Diameter - Spherical, Optically Worked Glass Lens - Ground Edges, Polished - Great for Physics Classrooms - Eisco Labs
KWD 5
Double Convex Lens, 100mm Focal Length, 3" (75mm) Diameter - Spherical, Optically Worked Glass Lens - Ground Edges, Polished - Great for Physics Classrooms - Eisco Labs
KWD 5
Double Convex Lens, 500mm Focal Length, 3" (75mm) Diameter - Spherical, Optically Worked Glass Lens - Ground Edges, Polished - Great for Physics Classrooms - Eisco Labs
KWD 4.500
Deluxe Optics Kit - Mirrored Light/Ray Box & 29 Optical Components - Includes Manual with 18 Activities - Eisco Labs
KWD 31
