Abstract: Hole punching apparatus for punching registration holes for graphic arts sheets, steps, etc. including table support means (e.g., a graphic artist's light table) having a grooved guide channel for registration pins along one side and a second similar grooved guide channel perpendicular to the first and positioned intermediate the ends of the first, a single hole punching means having a depressable position-retaining means for sheet material being punched and whose punch axis is aligned at the intersection of the two grooved guide channels, and three registration pin assemblies, one each of which assemblies is separately slideably positioned in one of the three legs of the intersecting grooved guide channel. The registration pin assemblies being adapted to be locked in a fixed position.