Thanks for this. I did one similar that I keep in my sewing room for quick reference except mine just showed basic sizes like:
1/8 yd. = 4 1/2"
1/4 yd. = 9"
1/3 yd. = 12"
etc, etc, etc.
I refer to mine a lot since I'm not good at math & numbers. I've copied and pasted & printed yours out to go with mine.