90 degree Slotted Ruler, 2' spacing, 1/4" thick, Large Slot width.  This template has multiple slots for adding Piano Keys or any parallel lines on your quilt.  Slots are spaced 2 inches apart.  The template is 1/4 inch thick.  Slots width is Large.  This template is sized for the APQS Systems and systems with similar hopping foot width.  Go to our website for instructional videos on how to use this template.  www.terylloy.com