Finally, a simple and easy way to keep you in line! Phantom Line Easels offer a 36 x 25 dry erase markerboard with an innovative 2 x 2 grid pattern that is only visible to those standing beside the easel. The Phantom Lines aid the user, but are unseen by the audience. Perfect for drawing charts or as penmanship guide lines. Phantom Line Easels adjust from 42 up to 71 high. The double-sided markerboard rotates a full 360º simply by pulling the spring-loaded knob, and accommodates standard flipchart pads