Two screw-creases must be obtained, one light and the other heavy (Fig. 37); one is used for light lines and the other for heavy lines along the edge of the leather, and for marking the lines for stitching. By means of the screw, the points are closed or opened, thus bringing the line nearer to the edge of the work or taking it farther away.
Fig. 38.—Checker.
Fig. 39.—Beveller.
Fig. 40.—Compasses.
Fig. 41.—Race Compasses.
Checkers (Fig. 38) are small double creases with two parallel edges, one of which marks the small ornamental checked lines on loops; one edge is run along the last line done, which thus serves as a guide for keeping the lines parallel. Sizes 1, 2, and 3 will be sufficient. A brass foot-rule, of course, must be obtained.