Flying Geese Set #4 contains 3/4" x 1 1/2" finished (1 1/4" x 2" trimmed) and 1" x 2" finished (1 1/2" x 2 1/2") rulers that lock onto seams for instant & corrrect ruler placement, control so that the seams end in each corner and trims the correct amount across the tip. Ruelr rock is gone, too. Once the unit is completed and trimmed, it will measure “x”. Trims full and partial flying geese, parallelograms, square in a square and many. many other types of flying geese.