Seen in the photo, this gauge has the serious and pro air. In reality, once the subject in hand, two faults are revealed: immediate: the valve is poorly designed, it has no depth, it is not screwed, and it is difficult to maintain the tire valve without it leaking everywhere. Nothing to do with the serious valves of service station compressors, or even with that of my previous manometer which I unfortunately lost. a future: cahoutchouc pipe between valve and display no use (a non-articulated compact device would be better) and it will be a problem in time (cracking of cahoutchouc). In short, it works, but it's really not that great. Only dépanage. Alain M.
