Diamond Art: Using a Ruler with Round Drills

Using a ruler with round drills on Diamond Art Club canvas. The ruler size I'm using for this canvas is 140.5.
I apologize for the "Hello, ladies." I originally had not intended to share this except with two friends. :/
I have the rulers overlapped and this wasn't a good way to do it, so don't follow that lead. It was a last-minute decision to use two rulers at the same time, and I had not thought of making a video at the time. I do hope this might help someone, though.
The kit I'm working on is from Diamond Art Club (www.diamondartclub.com). It is Flight of the Fireflies by Randal Spangler.