Faber-Castell TK-System drawing board DIN A3,drawing boards are available in various designs as A4 and A3 boards. They are made of top-quality plastic materials which are impact and break-resistant and highly rugged so that they cannot be damaged by compass needles. The quick release paper clamp is super-strong and, thus, able to hold several sheets of paper securely. Moveable parallel rulers and drawing heads with adjustable angles allow precise drawing of parallel lines and angles.