A friend who runs a great business suggested I try one of these tapes. I've used Stanley tapes for years, but I missed the auto lock. I've had to lay out and cut a lot of aluminum sheets recently, so I ordered one to try. I was sold after the first sheet was made. The blocking is great, of course, but what I liked best was the large font and high contrast. I liked them so I bought two more and started giving them away. A good roulette for a master is worth its weight in gold.