New Magnifier W/Letter Opener 3X. This is a new brass 3X magnifier with a letter opener. 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 8 1/4" (210 mm) long with a lens that measures about 2 1/4" (57 mm) in diameter.