5-Pack Fresnel Lens Φ80mm(3.15) Focal Length 60mm Optical Fresnel Magnifying for Solar Projects,Equipment Lens,Visual Education (Focal Length 60mm)

Diameter 80mm(3.15) with focal length 60mm Thickness: 2mm, Material: PMMA(acrylic) Great for Visual Aid education, Solar heating experiment, DIY

8.3 x 11.75 LARGE 3X Fresnel Lens FULL PAGE

8.3 x 11.75 LARGE 3X Fresnel Lens FULL PAGE

2-Pack Fresnel Lenses 280 * 280MM Focal Length 600MM Acrylic

5-Pack Fresnel Lens Φ60mm(2.36) Focal Length 30/40

Fresnel Solar Concentrator Optical Acrylic Lens With 4 Array For

Diameter 60mm(2.36) with focal length 60mm Thickness: 2mm, Material: PMMA(acrylic) Great for Visual Aid education, Solar heating experiment, DIY

5-Pack Fresnel Lens Φ60mm(2.36) Focal Length 30/40/50/60/70/80mm Acrylic Fresnel Magnifier for Solar Project,Equipment Lens,Visual Education (Focal

5-Pack Fresnel Lens Φ20mm(0.79) Focal Length 10mm(0.39) Acrylic

5-Pack Fresnel Lens Φ60mm(2.36) Focal Length 30/40

2-Pack Fresnel Lenses 150 * 150MM Focal Length

545mm x 325mm Crystal Clear Spot Fresnel Lens for Solar Projects

8.3 x 11.75 LARGE 3X Fresnel Lens FULL PAGE

Diameter 80mm(3.15) with focal length 60mm Thickness: 2mm, Material: PMMA(acrylic) Great for Visual Aid education, Solar heating experiment, DIY

5-Pack Fresnel Lens Φ80mm(3.15) Focal Length 60mm Optical Fresnel Magnifying for Solar Projects,Equipment Lens,Visual Education (Focal Length 60mm)

Diameter 80mm(3.15) with focal length 60mm Thickness: 2mm, Material: PMMA(acrylic) Great for Visual Aid education, Solar heating experiment, DIY

5-Pack Fresnel Lens Φ80mm(3.15) Focal Length 60mm Optical Fresnel Magnifying for Solar Projects,Equipment Lens,Visual Education (Focal Length 60mm)

2PCS/Pack acrylic ultrathin fresnel lens Size:280*280mm, Focal length:600mm, Thickness:2mm, Material:PMMA Visual Aid for education - Great for reading

2-Pack Fresnel Lenses 280 * 280MM Focal Length 600MM Acrylic Optical fresnel lens Fire Starter/Solar Oven/Scientific Research&Education/DIY Projection

2PCS/Pack acrylic ultrathin fresnel lens Size:280*280mm, Focal length:600mm, Thickness:2mm, Material:PMMA Visual Aid for education - Great for reading

2-Pack Fresnel Lenses 280 * 280MM Focal Length 600MM Acrylic Optical fresnel lens Fire Starter/Solar Oven/Scientific Research&Education/DIY Projection