Abstract: A marking assembly includes a cylindrical member, upon which are supported indicia marking members, and a closure cap, having an ink pad secured therewithin, adapted to be placed over the cylindrical member by means of a coupling which is substantially air-tight so as to prevent evaporation of the ink. The indicia members may be removably secured to the cylindrical member by means of a pressure-sensitive adhesive or a snap fitting so as to be readily interchangeable, and the cross-section of the members is sharply tapered so as to produce well-defined sharp images. A further embodiment of the assembly may also include a second closure cap within which is defined a well for housing a small bottle of ink.