Excellent product! I’ve been in construction for over 35yrs. Well, I had a flooring job come up and could not my contour gauge. I decided to go ahead and order one. This gauge proved to be far superior to my old gauge. It was very easy to use and even though I eventually found my old gauge I’ll continue to use this one. The overall speed and ease this model offers made quick work of the flooring I installed. I would recommend this to anyone, novice or professional.