Profil Drawing Board A3For precise drawings and easy, comfortable working.Robust board of unbreakable, non-warping material. Ergonomic design for easy, comfortable working. Parallel straightedge with STOP-and-GO locking/unlockin action. The L-system straightedge design - allows drawing along the top edge of the straightedge right down to the bottom of the sheet, with full accuracy and stability. Magnetic clamp strip plus additional corner clamp to hold media securely. Guide rails designed for permanently smooth, featherlight straightedge movement. End lock on A3 straightedges for added stability. Can be used with tilters (purchased separately) for added working comfort.