The gauge I received was accurate to 1psi or better at around 30psi and could hold pressure readings for minutes or longer. (which I found quite remarkable). The gauge looks premium and is quite heavy due to the large faceplate and brass construction, so storing it in a glove box, unless wrapped in a soft pouch, might not be ideal. Perfect for your tool box and the best value for money I've seen. (This gauge probably costs less than a set of digital gauge batteries.) My only gripe is that the gauge is a bit finicky about aligning the valve stem to avoid losing air when measuring.
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