Things I liked:Works well to fill the tank on my condor. Gauge works well and seems to be accurate. Things I would have changed:I called Airforce about this... The gauge is upside down. What others should know:As you can see in the Pyramyd picture, there is a recess cut in the gauge to allow the clamp to mount onto lower profile scuba tanks. You will notice that the gauge is on the same side as this recess. The problem this creates it the fact that gauge is upside down when it is connected to a lower profile K valve. I called airforce thinking I may have gotten one assembled wrong or something, but they were not extremely helpful and said that this is how they were made. To me this is a major flaw in design. Why on earth would anyone want to have to tilt their tank to read the gauge? I know that I do not.