It is a centering tape for longarms (http://www.colonialneedle.com/) Love it! I do full floats, and this helps me keep the top aligned perfectly as I roll.
As proof to Mary that I indeed was working today, these ladies were painting fabric for quilt backs. We had fun , and they went home with several beautiful, one of a kind pieces of fabric. Fabric dyeing and painting is another thing I love to do. I do much of the fabric in my quilts with various painting and dyeing techniques. There just isn't enough time to get all the things done I like to do!