Draw a rectangle 7½"x3½".

Draw lines across 1", 1½" and 2½" as in drawing.

In the 1" space draw the tongue ½" wide, by measuring 1½" from each side of rectangle. Mark off ½" on the corners on the 1" line and draw oblique lines, as shown in drawing. Draw lines for the slot opposite the tongue, and as long as the width of the tongue, and as indicated in the drawing. Cut out figure with scissors. Score and fold on dashed lines.

In cutting the slot, bore hole in the ends of the lines with a needle or other pointed instrument before inserting the scissors. Material: Tagboard.