Did anybody else NOT know that tape measures are 5/8" wide? It never even occurred to me until yesterday. How many times could I have used that information over my 40-odd years of sewing?!
So just in case anyone else is as dense as I am, measure the width of your tape measure--I'm sure that there are lots of times when you could use an easy-to-get-to tool that's the width of the seam allowance.