TK- System drawing boards have double guide grooves for smooth operation of the parallel ruler. The paper clamp bar grips one or more sheets firmly & is easy to release. The parallel ruler can be operated one-handed at any position and is ideal for left-handed people. Faber-Castell is one of the worlds largest manufacturers of art supplies. Founded in 1761 at Stein near Nuremberg by cabinet maker Kaspar Faber (173084), the enterprise has remained in the Faber family for eight generations. Faber-Castell are renowned for producing high-quality art products, with their ranges of pencils (Polychromos, Albrecht Durer and Pitt Pastel) and Pitt Artist Pens (used by Manga artists the world over) being particularly well known.