Enough Well done, neat. However, I found it very difficult to constantly work with the valve without wasting more air than I wanted. I almost always had to change the angle to fully close the gauge with the valve. When I took this issue to the seller they sent me a replacement but they had the exact same issue leading me to believe it was a designer floor and not a defective unit. DO NOT test pressure on anything that exceeds the 100psi maximum. There is no valve for releasing excess pressure which I accidentally made and the gauge needle twisted and hit the pin with such force it bent it significantly and also reduced the accuracy of the gauge. My advice is to keep going and keep looking.