8.3 x 11.75 LARGE 3X Fresnel Lens FULL PAGE Magnifier -- Solar Oven/DIY Projection TV PLANS by Cz Garden Supply

Perfectly made. Does it what supposed to do. Helping the kid for her science project. Awesome magnifying sheet for inspecting surface damages in Engineering domain. Excellent fire starter too.

A good product that can be kept handy to check out docs n drawings and other details that are minute nnhard to see clearly. Quality also decent.

I bought this seeing a youtube video of paper catching fire. I tried it and in just a few seconds paper catches fire. Works wonderfully, and it can burn anything inflammable.

The material that has been given in details is glass, but it's made from plastic. It works tho! At 39-39.5cm is the focal point. Instant heat produced.

good product

I have to do extensive reading of research studies that messed with my eyes despite the highest quality glasses I wore. Finally bought this to read and stuck it by maintaining some distance from screen. Hope this helps someone

Came with scratches . Does the magnification. But it is basically plastic sheet and not glass lens. So i don't think it is good for solar cooker. Can damage the lens due to heat.

Able to focus easily. Useful for fun sciencr learning activities for kids like buring paper pieces or melting wax