The Martin Universal Drawing Board with Parallel Straight Edge is ready to help you achieve professional results from your work. This sturdy but lightweight board includes a straightedge with an anti-warp aluminum body. The parallelogram technology ensures accuracy and eliminates the need for an acrylic straightedge or T-square. The straightedge has an inking edge plus large knobs on each side for adjusting the angle while still allowing parallel alignment with the artwork or drawing. Beneath the board are two ribbed strips that permit the user to position the board over the edge of a desk or table without the chance of slippage. In this manner, the board can also be positioned in the user's lap. There are two folding rubber feet under the board for added stability, and a comfortable handle is attached for easy carrying. With exceptional design and strength, this board will provide many years of accurate and helpful use. About Martin Universal/F. Weber Co. For a century and a half, the name Martin Universal and F. Weber Co. have been synonymous with quality art materials. Established in 1853 in Philadelphia, Pa., the Martin/Weber is the oldest and one of the largest manufacturers of art materials in the United States. Incredibly strong, lightweight board. White melamine drawing surface. No assembly required. Many sizes available.