BISS: American Educational 6 Piece Glass Lens Set - American Educational

BISS: Eisco Labs 6 Piece Premium Optical Glass Lens Set, 50mm Diameter - 3 Double Convex (20, 30, 50cm FL) and 3 Double Concave (20, 30, 50cm FL) - EISCO

BISS: Eisco Labs Optical Glass Lens, Double Concave, 75mm Diameter, 20cm Focal Length - EISCO

BISS: Eisco Labs Double Concave Glass Lens 75mm diameter, 50 cm Focal Length - 1 Single Lens - EISCO

BISS: SEOH Lens Glass Double Concave 38mm x 10cm Focal Length - Scientific Equipment of Houston

BISS: United Scientific LSTA50 Acrylic Demonstration Lens Set, 6 Pieces, 50mm Diameter - United Scientific Supplies

BISS: American Educational Unmounted Double Concave Lenses with Ground Edges, 50mm Diameter, 20cm Focal Length (Bundle of 5) - American Educational

BISS: American Educational Unmounted Double Concave Lenses with Ground Edges, 38mm Diameter, 10cm Focal Length (Bundle of 5) - American Educational

BISS: SEOH Lens Glass Double Concave 38mm x 30cm Focal Length - Scientific Equipment of Houston

BISS: 100W high power LED concave convex lens diameter 100MM optical glass lens

BISS: American Educational Unmounted Double-Concave Lens with Ground Edges, 50mm Diameter, 10cm Focal Length (Bundle of 5) - American Educational

BISS: Optical Glass Lens Set - 3 Dbl Convex, 3 Dbl Concave, 75mm Dia - 20, 30, 50cm FL - EISCO

BISS: SEOH Lens Glass Double Concave 50mm x 20cm Focal Length - Scientific Equipment of Houston

BISS: 6 Piece Acrylic Lens Set - 2" (50mm) Diameter - Double Convex, Double concave, Plano Convex, Converging Concave-Convex, Diverging Concave-Convex, Plano-Concave - EISCO

BISS: Ajax Scientific Polished Glass Double Lenses Spherical (Bi-Concave), 38mm Diameter, 50mm Focal Length - Ajax Scientific

BISS: Eisco Labs Optical Glass Lens Set - 3 Dbl Convex, 3 Dbl Concave, 38mm Dia - 20, 30, 50cm FL - EISCO

BISS: Eisco Labs Glass Lenses Set of Six in Wooden Case - 50 mm dia., 3 Double Convex (20, 30, 50cm FL) and 3 Double Concave (20, 30, 50cm FL) - EISCO

BISS: SEOH Lens Glass Double Concave 50mm x 5cm Focal Length - Scientific Equipment of Houston

BISS: SEOH Lens Glass Double Concave 50mm x 30cm Focal Length - Scientific Equipment of Houston

BISS: United Scientific DEMO50 Glass Demonstration Lens Set, 6 Pieces, 50mm Diameter - United Scientific Supplies

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