Thanks to whoever recommended the Bloc-Loc HST square up rulers! I know, I know! You can square HSTs with a regular ruler, but since I am a gadget gal, I had to try one of these. I am very impressed. Ruler did not move at all when I was squaring up my blocks. I am doing a BOM that is
all HSTs and this has made it much easier. I am so much more accurate using this.
http://blocloc.com/