I know, and I would have took a clearer pic but my tester couldnt withstand 230lbs and blew shortly after this pic.:yoyo:
Your tester looks like the same one I bought a week or two ago. Mine never worked from the start. It wouldn't hold pressure. I even tried a new check valve and that didn't work either. I took it back and now I have a Lisle. Don't know how long it will last or how good it is, but it -IS- made in the USA....not China/Taiwan like the one I returned was. I thought the one I had for 25+ years went bad, but it just turned out to be a bad check valve. Now I have two of them in working order......both made in the US.
Are you sure the check valve isn't just shot? They are a couple bucks a piece. I ended up buying a few as spares.