By taking out the screw of the ruling pen and looking directly at the point of the pen. it will be seen whether the worn point has a flattened surface. If so, place the pen on an oilstone (tine Turkey preferred) in the position shown in the sketch, apply a little oil, move the pen backwards and forwards, at the same time slightly rocking it horizontally and vertically. Wipe and ex i mine the pen occasionally, and stop just short of bringing the point to a sharp edge. If one point of the pen has been injured and is shorter than the other, hold the pen upright on the stone and grind both points level before removing the screw and setting the pen. If the points are too sharp, the pen will cut the paper, and it will be necessary to take off the keen edge by using it for a few minutes on a piece of brown paper.

Method of Setting a Ruling Fen.