I've decided to introduce the New Year with some of my sketchbook studies. For quick sketching outdoors I keep things as simple as possible. I carry a Rotring Art Pen, Pentel Colour and wash brushes and A4/A5 cartridge paper sketchbooks. Recently I've started to use ZIG Art and Graphic Twin This drawing tool has well-pointed brush in one end and a fibre tip nib at the other. This makes the Rotring pen obsolete.