This is Judi's first longarm ruler that she designed to help with all the marking she does on custom quilts.  Position the ruler once & draw more than one line at a time!  The ruler is 4" x 10" & is 1/4" thick so it is great for marking & quilting with a ruler foot.  There are 1/4" & 1/2" measurements to assist in marking & quilting out your straight line designs.  The bright green acrylic helps you see all of your lines on any fabric colour AND can be used with a domestic sewing machine as well.  Pair this ruler with the QuickMark Assist & you have all that you need!