This little sensor exceeded my expectations and I will be ordering another one. Most importantly, it provides a quick and secure connection to the valve stem. It's a durable design that's comfortable to hold while reading. The dial is large enough to be read, and 30 pounds is written right on the dial, making the number easy to approximate without reading glasses. The outlet valve saves the last measurement, so you can check the reading at your leisure. The dial has a glass cover and the counter is large enough for its purpose and small enough to be carried in a glove box. I'll probably give him a royal bag to keep him shiny and new.