2-Pack Fresnel Lenses Φ100mm(3.94) Focal Length 40/50

Buy 2-Pack Fresnel Lenses Φ100mm(3.94") Focal Length 40/50/60/70/80/90/100/120mm Acrylic Fresnel Magnifier for Solar Heating,Equipment Lens,Lighting Concentrator,Visual Education (Focal Length 40mm): Magnifying Tools - ✓ FREE DELIVERY possible on eligible purchases

Fresnel Lens, Diameter 200mm (7.9''), Focal Length 100mm, Acrylic Lens (not Glass), for Physics Classroom,Solar Heating,Magnifiying. (Focal Length 100mm) : Industrial & Scientific

Fresnel Lenses Find and Compare Optical Lenses at MEETOPTICS

2-Pack Square Fresnel lens 345x345mm Focal Length 350mm for solar collecting, fire starter, DIY Project : Sports & Outdoors

Fresnel Lens Magnifier, Diameter 150mm (5.9''), Focal Length 140mm, Acrylic Lens (Not Glass), for Physics Classroom Education, Solar Heating

2pcs fresnel lenses Φ240mm with focal length 300mm Thickness:2mm, Material: PMMA (Acrylic) Visual Aid for education - Great for solar heating

2-Pack Fresnel Lens Φ240mm(9.45) Focal Length 300mm Acrylic Ultrathin Magnifier for Solar Heating,Solar Concentrator,fire Starter,spot Lens,Visual

Double Concave Lens, 250mm Focal Length, 3 (75mm) Diameter - Spherical, Optically Worked Glass Lens - Ground Edges, Polished - Great for Physics Classrooms - Eisco Labs: : Industrial & Scientific

Eisco Labs Double Convex Glass Lens 75mm Diameter 200mm Focal Length

2-Pack Square Fresnel lens 345x345mm Focal Length 350mm for solar collecting, fire starter, DIY Project : Sports & Outdoors

Fresnel Lente 5.906 x 5.906 in, longitud focal: 5.512 in, lente acrílica (no vidrio), para calefacción solar, aumento, óptica/educación visual : Industrial y Científico