Flying Geese "BLOC LOC" Ruler with Squaring-Up Groove 2.5" x 4.5" (2" x 4" finished) 222-sold the Underbraider allows for that

the Underbraider allows for that "certain something special" on a fashionable garment or craft project

This usually solves the issue as the iPad tends to hide downloaded files in odd places and requires a reader app to open it (Adobe Reader App or Kindle App are free)

The correct term for the attachment foot is "presser foot"

This is really hard to explain

Flying Geese "BLOC LOC" Ruler with Squaring-Up Groove 2.5" x 4.5" (2" x 4" finished) 222-sold the Underbraider allows for thatThe easiest flying geese squaring up ruler I have ever used. Lock your flying geese seams in the underside groove of the ruler and your ruler won't twist or wobble, making it easier to square and trim! The Flying Geese ruler will also square up a Diamond in a Square unit. Ruler is 2. 5" x 4. 5" (2" x 4" finished in a quilt) Bloc Loc's patented technology of flying geese rulers make the tough job of squaring up easy and fast. The groove slides along