I bought these as we seem to keep Discount Tire in store we buy so many tires for all our vehicles. Just last year we bought 20 tires just for our private cars so we thought I should have a tire gauge handy. The interesting thing about this gauge is that on the 32nd side of the gauge the small markings are missing right where they are needed. . So, as an analogy, imagine an air gauge working in increments of 15 instead of 1. It's a fine caliber, it just doesn't hit the mark, at least not on the .32 side we use here in America.