Fresnel Lens Magnifier, Diameter 200mm (7.9''), Focal Length 200mm, Acrylic Lens (not Glass), for Physics Classroom,Solar Heating,Magnifiying. (Focal Length 200mm) sold2026 5 KHz Resonant impedance (ohms):

5 KHz Resonant impedance (ohms): 300 max Diameter: 15mm/ 0

and cameras

Use this product comfortably in your home knowing using ECO-FRIENDLY products and contributing towards sustainable living our range are environmentally friendly using solar panels to heat the kiln and safe the forest

or even sunglasses

Fresnel Lens Magnifier, Diameter 200mm (7.9''), Focal Length 200mm, Acrylic Lens (not Glass), for Physics Classroom,Solar Heating,Magnifiying. (Focal Length 200mm) sold2026 5 KHz Resonant impedance (ohms):Fresnel Lens Magnifier, Diameter 200mm (7. 9''), Focal Length 200mm, Acrylic Lens (not Glass), for Physics Classroom,Solar Heating,Magnifiying. (Focal Length 200mm) Size: 200mm Thickness: 2mm Material: PMMA (acrylic) Groove pitch: 0. 5mm Transmission (%): 92 (from 400 1100nm) Index of Refraction nd : 1. 491 Operating Temperature (C): 80 (Maximum) Product Features 1 Pack Round Fresnel Lens Magnifier Size: 200mm, Thickness: 2mm, Material: PMMA (Acrylic)