3 New Magnifiers. This is a new set of 3 magnifiers. The powerful magnification may help to reduce eye strain. They are convenient for your home, office and travel. These enlarge fine print in books, maps, newspapers, directories, legal documents, etc. You receive: One 2X magnifier that measures approximately 4 1/2" (114 mm) long, has a lens that measures about 1 3/4" (45 mm) in diameter and a focal distance of 4" (152 mm). One 3X magnifier that measures approximately 6 1/2" (165 mm) long, has a lens that measures about 2 7/8" (73 mm) in diameter and a focal distance of 3" (76 mm). One 4X magnifier that measures approximately 8 1/8" (206 mm) long, has a lens that measures about 3 7/8" (98 mm) in diameter and a focal distance of 2 1/2" (64 mm).