This is a set of 4 circle rulers by Lori Holt of Bee in my Bonnet and Riley Blake Designs.
The rulers are 2", 4" , 6" and 9" . You can use them for rotary cutting or template tracing. They were especially designed for convenience when using precut fabric squares in 10", 7", 5" and 2 1/2" size.
Lori has many tutorials on her blog on how she uses these circles in different projects;www.beeinmybonnetco.blogspot.com
Join Lori on her blog starting August 26, 2019 for the Granny's Garden Sew Along.
This ruler sets one of the supplies needed to make the Granny's Garden Quilt.