This is my favorite also. My 1/2 square triangle blocks are always the perfect size. It is one tool that I count as invaluable! Super easy to use. I had to get mine at a quilt store. I am sure there is probably a U-Tube video on how to use it. I would definitely research it. I highly recommend it.
Originally Posted by
AliKat
I bought the Martingale/That Patchwork Place Bias Square Up ruler years ago. I like it best because it is easy to read and in 1/8" increments. There are no other lines to confuse the issue and it is easy to use.
While there my be other rulers that can be used, this is what I prefer. I feel it was well worth the investment ... esp since I am easily distracted.