Focusvue +/- 0.25 To +/- 4.00 Optical Flipper Plastic Confirmation Flip Lens Instrument (1.5)

Focusvue +/- 0.25 To +/- 4.00 Optical Flipper Plastic Confirmation Flip Lens Instrument (2.0)

JIATONG 5PCS X 12.5mm Glass Lens Optical Glass Convex Lens height:3.6mm Plano-Convex Lens 12.5mm LED Lens (12.5Mmxh3.6Mmxf10mm)

4 Lens Plastic Optical Flipper Ophthalmic Holder Eye Trainer Occluder Optometry Equipment (Color : 0.75)

ULTECHNOVO 50mm Double Convex Optical Lens 1.96 Inch Diameter Polished Glass Science Equipment For Educational And Laboratory Use

LIAPDG 10W Optical Lens Tester, AC110V Iron Multifocal Lens Tester Tabletop Lens Testing Machine 4.8 X 4.56 X 11.81 Inches

YOKIVE 2 Pcs Double Concave Lens, Clear Glass Optical Lenses | Make Telescope, Great For Photography, Optical Instruments Use (Clear, 200mm Focal

Good SALE Optical Instrument Trial Lens Set Optometry Optical Rack Lens Set 6PCS

Fresnel Lens Large, Diameter 300mm (11.81"), Focal Length 360Mm(14.17") Solar Concentrating Lens, Optical Experiment, Solar Oven, Solar Death Ray,

104 Optical Trial Lens Set, Metal Rim Aluminum Optometry Kit Case Box Trial Frame Professional Optometry Lens Case Trial With Glasses Frame, Precise

Bewinner 0.96 Inch 3X Barlow Lens, 24.5mm Optical Glass Barlow Achromatic Lens, m42x0.75mm Thread, Easy To Use, Durable, Barlow Astronomical Telescope

Double Convex Lens, 300mm Focal Length, 3" (75Mm) Diameter - Spherical, Optically Worked Glass Lens - Ground Edges, Polished - Great For Physics

Double Concave Lens, 100mm Focal Length, 3" (75Mm) Diameter - Spherical, Optically Worked Glass Lens - Ground Edges, Polished - Great For Physics