Martin Sun-Catcher Translucent Tracing Board, 16 x 21 Inches, 1 Each (U-BB1621A) Constructed of smooth, scratch-proof melamine and features a translucent interior panel which can easily be backlit for tracing Great for cartooning, embossing or tracing patterns 16 x 21 surface is backed with the exclusive and innovative Martin Adjusto-Stand which provides five (5) angles of adjustment and an upper clip to keep work from shifting while in progress Lightweight board transports easily to and from class or workshops with a comfortable handle Overall dimensions from lowest to highest setting" 5-9" H x 21" W x 16" D Light weight board Translucent surface 6-position adjustable stand for ease of use and backlighting Viewing screen size 12-1/2 by 14-inch No Batteries required