here is a youtube
http://www.youtube.com/watch?v=OMp5sRAzVD0 for the scallops ruler her customer service is not great a few years ago I ordered her prairie points ruler I got the confermation from paypal but nothing from her so I emailed her that I was concern about my order and never heard back 2 weeks later still nothing not even a thank you, your order has been shiped nothing so I emailed her again and still no reply I was about ready to complain to paypal when they arrived the rulers are ok..I have el burns scallop ruler and love it