Double Concave Lens, 50mm Focal Length, 2" (50mm) Diameter - Spherical, Optically Worked Glass Lens - Ground Edges, Polished - Great for Physics Classrooms - Eisco Labs home2022 Warm Company Steam-A-Seam 2 Double
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Description
Double Concave Lens, 50mm Focal Length, 2" (50mm) Diameter Spherical, Optically Worked Glass Lens Ground Edges, Polished Great for Physics Classrooms Eisco Labs home2022 Warm Company Steam A Seam 2 Double Warm Company Steam A Seam 2 Double Stick Fusible Web 9"X12" Sheets 5 Pkg (5517) (2 Pack of 5) nickel plated surface