280x280 mm große starre Acryl Fresnel Linse SOLAR Lupe Backofen Herd 11 Zoll x 11 Zoll
26,38 €
Large RIGID Acrylic Fresnel Lens SOLAR Magnifier Oven cooker 11"x11" 280x280mm. 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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