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Fresnel Lens Page Magnifier
Fresnel Lens Page Magnifier Quantity in Basket: None
Price: $7.41
Shipping Weight: 0.10 pounds
For the Solar Powered Marshmallow Roaster project:

This Fresnel lens is 10 inches by 7 inches, with a focal length a little over 10 inches.
It concentrates the sun's energy down to a fine point, generating extremely high temperatures.

It can also be used to magnify the pages of a book to make reading easier.