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

buy Fresnel focus length 350mm 5T - Fresnel Factory.com

Double Concave Lens, 150mm Focal Length, 3 (75mm) Diameter - Spherical, Optically Worked Glass Lens - Ground Edges, Polished - Great for Physics Classrooms - Eisco Labs: : Industrial & Scientific

Diameter 40mm(1.57) with different focal length Thickness: 2mm, Material: PMMA(acrylic) Great for Visual Aid education, Solar heating experiment, DIY

Six Seasons 5-Pack Fresnel Lens Φ50mm(1.97) Focal Length 28mm Acrylic Fresnel Magnifier for Solar Project,Equipment Lens,Visual Education (Focal

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

Diameter 300mm(11.81) with different options on focal length Thickness: 2mm, Material: PMMA(acrylic) Great for Visual Aid education, Solar heating

2-Pack Large Fresnel Lenses Φ300mm(11.81) Focal Length 200mm Acrylic Magnifier for Solar Heating,Solar Cooking,Visual Education. (Focal Length 200mm)

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

10PCS PIR HDPE Human body Infrared Induction Fresnel Lens Far Sensing Distance

Double Convex Lens, 1000mm Focal Length, 3 (75mm) Diameter - Spherical, Optically Worked Glass Lens - Ground Edges, Polished - Great for Physics Classrooms - Eisco Labs: : Industrial & Scientific

Diameter 100mm(3.94) with focal length 80mm Thickness: 2mm, Material: PMMA(acrylic) Great for Visual Aid education, Solar heating experiment, Solar

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