New Magnifier 3X. This is a new 3X magnifier. The powerful magnification may help reduce eye strain. It is convenient for your home, office and travel. Enlarges fine print in books, maps, newspapers, directories, legal documents, etc. It has a 3" (76 mm) focal distance. It measures approximately 6 1/2" (165 mm) long with a lens that measures about 2 7/8" (73 mm) in diameter.