15.—Holding a Ruling Pen. details

“13. Inking.—For drawing ink lines other than arcs of circles, the ruling pen (or right-line pen, as it is sometimes called) is used. Its should be held as nearly perpendicular to the board as possible, with the hand in the position shown in Figs. 15 and 16, bearing lightly against the T square or triangle, along the edge of which the line is drawn. After a little more practice, this position will become more natural, and no difficulty will be experienced.” (pp. 11 – 12)