Square-Up Ruler

I have quite a few rulers with some used more often than others. This baby is used everytime I make half-square triangle blocks and it does a marvelous job of squaring up these blocks. Once I’ve sewn together 2 blocks and cut them apart on the diagonal, I use this ruler to square the block before I press it open…a real time saver! I line up the finished block size indicated on the ruler with the seam allowance and then cut away the excess on the two sides.