Large Full Page Magnifying sheet with black vinyl frame. This is a flexible plastic sheet which acts like a large magnifying glass. The quality of lense is determined by the groove density. This magnifier is high quality with over 3 grooves per mm. Lenses with lower groove density produce a distorted image. Ideal visual aid for viewing large areas of text and maps and for viewing photos. Very useful to keep in the car with a road atlas or for general use around the home. Made from light weight plastic. The magnifier is brand new and comes in a sealed cellophane wrapper. Size: 190mm x 300mm Thickness: 0.4mm Focal length: 300mm Magnification: 3x Weight: 60g