3x Magnifier Great For Enlarging Fine Print In Books, Maps, Newspapers, Directories & Legal Documents Great for enlarging fine print in books, maps, newspapers, directories, legal documents, etc May help reduce eye strain It is compact and convenient for your home, office and travel Has a focal distance of 2" (51 mm) The viewing lens measures approximately 3 1/8" (80.2 mm) in diameter This magnifier measures approximately 6 3/4" (171.4 mm) long Newer versions of the item shown may be shipped, as a result, there may be a slight variation in color and design.