26 x 18cm Human Face. Pen & Ink, watercolor. Another advantage of pen and ink–nibs and India ink: I spent $8.00 the other day on two Derwent Graphik fine liners. With the kind of work I’ve been doing, they’ll be good for maybe 5 or six pieces. A bottle of ink and a 102 nib, if I keep it clean, will last for months, working every day. And the lines are more dynamic and less mechanical.