Abstract: An apparatus, based on a conventional lathe, for the screening of ink transfer rollers including a rotatable screen forming tool rotably held above the ink transfer roller by a pivoted arm, is disclosed. The arm pivots about an axis parallel with the axis of rotation of the roller and to one side thereof with a damping device extending from the arm on a side opposite the pivot to a base. The base transverses along the lathe bed and rigidly supports a post to which the arm pivot is attached for adjustable height. The arm also includes a variable weight for adjusting the force of the tool upon the roller.