Tool Sockets in Edge of Drawing Board
Drawing tools, pencils, etc., were kept out of the way on a drawing board by inserting them in pockets drilled in the upper edge of the drawing board. A small brass plate, pivoted on the center, was used to cover each set of two pockets, and the latter were numbered on the upper surface of the board.—Elmer O. Tetzlaff, De Pere, Wis.