Hilco Full Page Fresnel Magnifier ~ 299-0DV1500-00
A Fresnel lens can be made much thinner and very much lighter than a comparable conventional lens, as in this case taking the form of a flat sheet.
Weight of magnifier is only 44g.
8.5" x 11" full page magnifier with 4.5" Focal distance.
Ideal for use on phone books, magazines, maps or the Bible.
Magnification is 4 X with a lens diameter of 16D