Transparent, gray straight edge locks into any position along guide rail. Takes paper sizes up to 14 in. x 19 in. Removable, graduated straightedge. Has transparent, integrated protractor. Corner paper clamps holds drawing media firmly. Locking mechanism for quick adjustments of straightedge position. Vinyl carrying case with handle included. Optional drawing head attaches easily to straightedge of drawing board to increase versatility. Drawing head has automatic set and lock in increments of 15 degrees, or locks at any angle.