I got mine for my bike because my friend already had a pump but no pressure gauge. Spring. It was a small pump and took forever to use, so I ended up buying another larger pump. I decided to just check the pressure of two devices and they were the same. If you're just using this thing to get a quick test reading, this is for you. Made in the USA! When you need something critical and require ultra high precision. This is probably not for you. I use it on my bike and truck. Works like a champ. I could buy a second one and just leave it in the truck.