Originally Posted by sbslider

Perhaps what you are saying makes sense, but coming from an electronics background I have not problem using my hand held Digital Volt Meter to measure 0.2V or 350V. It is very accurate measuring either. Don't see why other measurement devices can not be accurate across the range as well. For 5psi, I am hoping for 10-20% or so accuracy, it is not rocket science putting air in an RO tank bladder. For my car, I would like a fairly accurate gauge, hopefully to a 1 PSI or better. For my bike, the difference between 85 and 90 PSI is not a big deal. I just don't want a reading of 90 PSI to really be 70 PSI. Again, not rocket science. If there are not gauges that are this good in an single product then I guess I am out of luck.