Staedtler Drawing Board Mars COLLEGE Plastic

With parallel drafting rail with double-sided scaling. Convenient one-hand double locking at any point on the grip strip. Double-groove guide for particularly smooth, jerk-free sliding of the ruler. Locking and free-running indicator through signal colors. Sheet clamping rails on both sides of the drawing board for secure hold of the drawing medium. Scale with pinhole for precise radius adjustment on the compass.