Book 3 — Plain Butts Used as Double-Swing Hinge
Reading edition
By placing two ordinary plain butt hinges so that two of their wings overlap completely, they may be made to serve as a double-swing hinge. If the holes do not correspond in the adjoining wings, drill new ones, disposing them to give the best hold in the wood. Allowance must be made in applying the hinge, for the double thickness of the center portion.
¶A rubber finger tip is convenient in counting sheets in that the paper is not soiled, since moistening of the finger is unnecessary.