quote:As an electrical engineer, I find the complete lack of spec for accuracy and error of these gauges frustrating. So that leads to the question: If there is NO specifications, HOW do we know that pencil or dials type are better? And digital is not necessarily more accurate, it's just easier to read. It is possible, using the same gauge each time, the pressure variation from tire to tire would be small.
I've noticed that none of these types of gauges ever specifies a level of accuracy, or an error percentage, on the packaging or instructions. They always say "reads in 0.5psi increments," or something to that effect.
quote:True for a tank type compressor, after the tank had a chance to cool. When you release compressed air, it actually gets cold. I have a 12V mini compressor, the hose actually gets warm as I pump. I pump it to 40 PSI, sleep on it, and bleed it down to 35 PSI the next morning in the garage.
Air that has gone from a compressor into your tires should be cold, not warm.