310x310 mm große starre Acryl Fresnel Linse SOLAR Lupe Ofen Herd 12 Zoll x 12 Zoll
29,99 €
Large RIGID Acrylic Fresnel Lens SOLAR Magnifier Oven cooker 12"x12" 310x310mm. Without proper eye protection, vision loss is possible. The power of the sun can be deceiving and anyone using a Fresnel Lens for solar collection should get in the habit of treating the Fresnel Lens like a stove, furnace, or blowtorch.
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