US Patent 7448817 Writing implement with magnifier

A writing implement includes a hollow tubular barrel having a side wall in which at least one set of two opposite window openings is defined, an optic member received in the barrel and forming a lens portion corresponding to each set of window openings, a sleeve fit over the barrel and having a side wall forming openings corresponding to the window openings of the barrel; and a head portion mounted to an end of the barrel and receiving therein a writing stem that is retractably extendable out of the head portion. With such an arrangement, a writing implement is combined with an optic member for visual observation as a single unitary device to provide advantages of being easily carried and conveniently use.