I own and use a laser square, but it still wont help you exactly align a stamp for re-stamping, because one can twist a stamp a fraction of an inch (rotate) and the laser suare wont catch that. its GREAT for applying thinly-sliced lines for borders, in a straignt line, and for making sure your sentiment is not 'cattywampus' to the edge of your card, if you designed it to aign to the edge. I am buying myself the MISTI because I stil need it. Buy yourself both. They cover two different applications.