Some people are really really really really really good at reading marks quickly. ;~)
I would be willing to bet the numbers are in the center. If the "1" was in the center it would be covered up by the magnetic hook.
Something to watch out for, you probably already know this, the curve in the blade for the stand off tends to make it difficult to mark accurately and not tip the measure case or hook. I personally want the least stand off for building furniture and cabinets. It is a trade off.