Designed by Quilter's Rule™ to provide quick and easy measurement and marking of squares from as small as 1.5" to as large as 5.5".  The Center and bias lines have been etched into the clear templates for quick marking capability.  Ideal for hand quilters!  Works great for crafting of all types, including scrapbooking.  Wonderful for centering your work.  These squares fit inside each other taking up the space of one template instead of five.