>Freznel lens -- any camping store that caters to RVs, such as Camping World. >www.campingworld.com. Fresnel. It's a thin plastic sheet with concentric ribbing which acts as a magnifying lens. Poor-quality ones will be made of plastics which degrade under ultraviolet light, or it may be crap adhesive going off which turns them brown. It creates a big fat blind spot. I wouldn't so obstruct my back window! -- Andrew Grebneff 165 Evans St, Dunedin 9001, New Zealand <andrew.grebneff@stonebow.otago.ac.nz> Seashell, Macintosh, VW/Toyota van nut |
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