Drawing board

Abstract

A drawing board and clipscale combination in which a paper holder and a ruler are united in a single body. The board has a groove and a portion overhanging it along each of the four sides. The clipscale includes a ruler, one side of which is protruded in the middle with a screw hole for receiving a screw. The other side of the ruler is a base side, and on the back is a linear hook-shaped stopper. The stopper is received in the groove of the board, and paper is positioned while the screw is loose. As the screw is threaded deeper, the one side of the clipscale is raised off the board, with the hook of the stopper engaged complementarily with the portion overhanging the groove of the board, so as to serve as a fulcrum. The base side is forced against the board with paper therebetween, so that the paper and the clipscale are fixed on the board in one action.

Dependencies are inferred from the claim text.