Original american early 20th century "peerless" draftsman's table designed and patented by adolph hoffman of columbus, oh. contains a fully adjustable cast iron and tubular steel pipe tripod base. The smallest drawing board is affixed to an extension arm mounted to the central upright. The medium-sized board - a unique dual clamping mechanism patented in 1910. The primary board retains the original pencil ledge. Boards can be tilted to any angle and revolved to any position.