This is a T-Bracket that has been machined from a single piece of steel and then blackened. It includes both imperial and metric measurement systems. The steel is so thick I didn't even think to bend it. It even includes a custom clear pouch/carry bag. The only thing I don't think it has is the cork strip on the back that many other rules have. I mostly use mine for sewing so cork would be a minus rather than a plus for me.